diff --git a/mailpoet/assets/js/src/automation/editor/components/header/index.tsx b/mailpoet/assets/js/src/automation/editor/components/header/index.tsx
index 79b047e5e9..02d7d5cc70 100644
--- a/mailpoet/assets/js/src/automation/editor/components/header/index.tsx
+++ b/mailpoet/assets/js/src/automation/editor/components/header/index.tsx
@@ -1,8 +1,9 @@
 import { Button, Icon, NavigableMenu } from '@wordpress/components';
 import { useSelect } from '@wordpress/data';
 import { wordpress } from '@wordpress/icons';
+import { PinnedItems } from '@wordpress/interface';
 import { MoreMenu } from './more_menu';
-import { store } from '../../store';
+import { store, storeName } from '../../store';
 
 // See:
 //   https://github.com/WordPress/gutenberg/blob/9601a33e30ba41bac98579c8d822af63dd961488/packages/edit-post/src/components/header/index.js
@@ -42,6 +43,7 @@ export function Header(): JSX.Element {
         <Button isPrimary className="editor-post-publish-button">
           Publish
         </Button>
+        <PinnedItems.Slot scope={storeName} />
         <MoreMenu />
       </div>
     </div>
diff --git a/mailpoet/assets/js/src/automation/editor/components/sidebar/header.tsx b/mailpoet/assets/js/src/automation/editor/components/sidebar/header.tsx
new file mode 100644
index 0000000000..3f30ee72f8
--- /dev/null
+++ b/mailpoet/assets/js/src/automation/editor/components/sidebar/header.tsx
@@ -0,0 +1,50 @@
+import { Button } from '@wordpress/components';
+import { useDispatch } from '@wordpress/data';
+import { stepSidebarKey, store, workflowSidebarKey } from '../../store';
+
+// See: https://github.com/WordPress/gutenberg/blob/9601a33e30ba41bac98579c8d822af63dd961488/packages/edit-post/src/components/sidebar/settings-header/index.js
+
+type Props = {
+  sidebarKey: string;
+};
+
+export function Header({ sidebarKey }: Props): JSX.Element {
+  const { openSidebar } = useDispatch(store);
+  const openWorkflowSettings = () => openSidebar(workflowSidebarKey);
+  const openStepSettings = () => openSidebar(stepSidebarKey);
+
+  const [workflowAriaLabel, workflowActiveClass] =
+    sidebarKey === workflowSidebarKey
+      ? ['Workflow (selected)', 'is-active']
+      : ['Workflow', ''];
+
+  const [stepAriaLabel, stepActiveClass] =
+    sidebarKey === stepSidebarKey
+      ? ['Step (selected)', 'is-active']
+      : ['Step', ''];
+
+  return (
+    <ul>
+      <li>
+        <Button
+          onClick={openWorkflowSettings}
+          className={`edit-post-sidebar__panel-tab ${workflowActiveClass}`}
+          aria-label={workflowAriaLabel}
+          data-label="Workflow"
+        >
+          Workflow
+        </Button>
+      </li>
+      <li>
+        <Button
+          onClick={openStepSettings}
+          className={`edit-post-sidebar__panel-tab ${stepActiveClass}`}
+          aria-label={stepAriaLabel}
+          data-label="Workflow"
+        >
+          Step
+        </Button>
+      </li>
+    </ul>
+  );
+}
diff --git a/mailpoet/assets/js/src/automation/editor/components/sidebar/index.tsx b/mailpoet/assets/js/src/automation/editor/components/sidebar/index.tsx
index 241df3f459..f0df51921f 100644
--- a/mailpoet/assets/js/src/automation/editor/components/sidebar/index.tsx
+++ b/mailpoet/assets/js/src/automation/editor/components/sidebar/index.tsx
@@ -1,9 +1,21 @@
 import { ComponentProps } from 'react';
+import { useSelect } from '@wordpress/data';
 import { Platform } from '@wordpress/element';
 import { __ } from '@wordpress/i18n';
 import { cog } from '@wordpress/icons';
-import { ComplementaryArea } from '@wordpress/interface';
-import { storeName } from '../../store';
+import {
+  ComplementaryArea,
+  store as interfaceStore,
+} from '@wordpress/interface';
+import { Header } from './header';
+import { StepSidebar } from './step';
+import { WorkflowSidebar } from './workflow';
+import {
+  stepSidebarKey,
+  store,
+  storeName,
+  workflowSidebarKey,
+} from '../../store';
 
 // See:
 //   https://github.com/WordPress/gutenberg/blob/5caeae34b3fb303761e3b9432311b26f4e5ea3a6/packages/edit-post/src/components/sidebar/plugin-sidebar/index.js
@@ -17,10 +29,20 @@ const sidebarActiveByDefault = Platform.select({
 type Props = ComponentProps<typeof ComplementaryArea>;
 
 export function Sidebar(props: Props): JSX.Element {
+  const { sidebarName } = useSelect(
+    (select) => ({
+      sidebarName:
+        select(interfaceStore).getActiveComplementaryArea(storeName) ??
+        workflowSidebarKey,
+    }),
+    [],
+  );
+
   const workflowName = 'Testing workflow';
   return (
     <ComplementaryArea
-      identifier="mailpoet/automation-editor/workflow"
+      identifier={sidebarName}
+      header={<Header sidebarName={sidebarName} />}
       closeLabel={__('Close settings')}
       headerClassName="edit-post-sidebar__panel-tabs"
       title={__('Settings')}
@@ -32,7 +54,8 @@ export function Sidebar(props: Props): JSX.Element {
       isActiveByDefault={sidebarActiveByDefault}
       {...props}
     >
-      Sidebar
+      {sidebarName === workflowSidebarKey && <WorkflowSidebar />}
+      {sidebarName === stepSidebarKey && <StepSidebar />}
     </ComplementaryArea>
   );
 }
diff --git a/mailpoet/assets/js/src/automation/editor/components/sidebar/step/index.tsx b/mailpoet/assets/js/src/automation/editor/components/sidebar/step/index.tsx
new file mode 100644
index 0000000000..865af406c0
--- /dev/null
+++ b/mailpoet/assets/js/src/automation/editor/components/sidebar/step/index.tsx
@@ -0,0 +1,5 @@
+import { PanelBody } from '@wordpress/components';
+
+export function StepSidebar(): JSX.Element {
+  return <PanelBody>Step settings</PanelBody>;
+}
diff --git a/mailpoet/assets/js/src/automation/editor/components/sidebar/workflow/index.tsx b/mailpoet/assets/js/src/automation/editor/components/sidebar/workflow/index.tsx
new file mode 100644
index 0000000000..fdf9c1b34f
--- /dev/null
+++ b/mailpoet/assets/js/src/automation/editor/components/sidebar/workflow/index.tsx
@@ -0,0 +1,5 @@
+import { PanelBody } from '@wordpress/components';
+
+export function WorkflowSidebar(): JSX.Element {
+  return <PanelBody>Workflow settings</PanelBody>;
+}
diff --git a/mailpoet/assets/js/src/automation/editor/index.tsx b/mailpoet/assets/js/src/automation/editor/index.tsx
index 24ea8476af..a74082e8f6 100644
--- a/mailpoet/assets/js/src/automation/editor/index.tsx
+++ b/mailpoet/assets/js/src/automation/editor/index.tsx
@@ -14,9 +14,13 @@ import { store, storeName } from './store';
 // See: https://github.com/WordPress/gutenberg/blob/9601a33e30ba41bac98579c8d822af63dd961488/packages/edit-post/src/components/layout/index.js
 
 function Editor(): JSX.Element {
-  const { isFullscreenActive } = useSelect(
+  const {
+    isFullscreenActive,
+    isSidebarOpened,
+  } = useSelect(
     (select) => ({
       isFullscreenActive: select(store).isFeatureActive('fullscreenMode'),
+      isSidebarOpened: select(store).isSidebarOpened(),
     }),
     [],
   );
@@ -24,6 +28,9 @@ function Editor(): JSX.Element {
   const className = classnames(
     'edit-post-layout',
     'interface-interface-skeleton',
+    {
+      'is-sidebar-opened': isSidebarOpened,
+    },
   );
 
   return (
diff --git a/mailpoet/assets/js/src/automation/editor/store/actions.ts b/mailpoet/assets/js/src/automation/editor/store/actions.ts
index 5577c32af1..bbfa40b1b3 100644
--- a/mailpoet/assets/js/src/automation/editor/store/actions.ts
+++ b/mailpoet/assets/js/src/automation/editor/store/actions.ts
@@ -1,7 +1,18 @@
+import { store as interfaceStore } from '@wordpress/interface';
 import { store as preferencesStore } from '@wordpress/preferences';
 import { storeName } from './constants';
 import { Feature } from './types';
 
+export const openSidebar =
+  (key) =>
+  ({ registry }) =>
+    registry.dispatch(interfaceStore).enableComplementaryArea(storeName, key);
+
+export const closeSidebar =
+  () =>
+  ({ registry }) =>
+    registry.dispatch(interfaceStore).disableComplementaryArea(storeName);
+
 export const toggleFeature =
   (feature: Feature) =>
   ({ registry }) =>
diff --git a/mailpoet/assets/js/src/automation/editor/store/constants.ts b/mailpoet/assets/js/src/automation/editor/store/constants.ts
index cbf753e12b..542d1568e5 100644
--- a/mailpoet/assets/js/src/automation/editor/store/constants.ts
+++ b/mailpoet/assets/js/src/automation/editor/store/constants.ts
@@ -1 +1,4 @@
 export const storeName = 'mailpoet/automation-editor';
+
+export const workflowSidebarKey = 'mailpoet/automation-editor/workflow';
+export const stepSidebarKey = 'mailpoet/automation-editor/step';
diff --git a/mailpoet/assets/js/src/automation/editor/store/selectors.ts b/mailpoet/assets/js/src/automation/editor/store/selectors.ts
index 623fd7a577..83f4921dca 100644
--- a/mailpoet/assets/js/src/automation/editor/store/selectors.ts
+++ b/mailpoet/assets/js/src/automation/editor/store/selectors.ts
@@ -1,4 +1,5 @@
 import { createRegistrySelector } from '@wordpress/data';
+import { store as interfaceStore } from '@wordpress/interface';
 import { store as preferencesStore } from '@wordpress/preferences';
 import { storeName } from './constants';
 import { Feature } from './types';
@@ -8,3 +9,8 @@ export const isFeatureActive = createRegistrySelector(
     (_, feature: Feature): boolean =>
       select(preferencesStore).get(storeName, feature),
 );
+
+export const isSidebarOpened = createRegistrySelector(
+  (select) => (): boolean =>
+    !!select(interfaceStore).getActiveComplementaryArea(storeName),
+);
diff --git a/mailpoet/assets/js/src/types/index.ts b/mailpoet/assets/js/src/types/index.ts
index e0faa0c496..d51c42f478 100644
--- a/mailpoet/assets/js/src/types/index.ts
+++ b/mailpoet/assets/js/src/types/index.ts
@@ -1,4 +1,5 @@
 import { ColorPalette, FontSizePicker } from '@wordpress/components';
+import { store as interfaceStore } from '@wordpress/interface';
 import { store as preferencesStore } from '@wordpress/preferences';
 
 import './wordpress_modules';
@@ -42,8 +43,14 @@ declare module '@wordpress/block-editor' {
 }
 
 declare module '@wordpress/data' {
+  type InterfaceStore = 'core/interface' | typeof interfaceStore;
   type PreferencesStore = 'core/preferences' | typeof preferencesStore;
 
+  // there are no @types/wordpress__interface yet
+  function select(key: InterfaceStore): {
+    getActiveComplementaryArea: (scope: string) => string | undefined | null;
+  };
+
   // there are no @types/wordpress__preferences yet
   function select(key: PreferencesStore): {
     get: <T>(scope: string, name: string) => T;
diff --git a/mailpoet/assets/js/src/types/wordpress_modules.ts b/mailpoet/assets/js/src/types/wordpress_modules.ts
index 5cd526fe66..ce016b91f4 100644
--- a/mailpoet/assets/js/src/types/wordpress_modules.ts
+++ b/mailpoet/assets/js/src/types/wordpress_modules.ts
@@ -1,11 +1,16 @@
 /* eslint-disable @typescript-eslint/no-explicit-any -- some general types in this file need to use "any"  */
+/* eslint-disable import/no-duplicates -- importing within multiple "declare module" blocks is OK  */
 
 // there are no @types/wordpress__interface yet
 declare module '@wordpress/interface' {
+  import { StoreDescriptor } from '@wordpress/data';
+
+  export const store: { name: 'core/interface' } & StoreDescriptor;
   export const ComplementaryArea: any;
   export const FullscreenMode: any;
   export const MoreMenuDropdown: any;
   export const InterfaceSkeleton: any;
+  export const PinnedItems: any;
 }
 
 // there are no @types/wordpress__preferences yet