- Open App Catalog Site in SharePoint Admin Center.
- Click Show more... and select Admin centers – SharePoint.
- Click apps.
![](/Pictures/Articles/workflow-office-365-001-small.png)
Select App Catalog. If it does not yet exist, create it.
![](/Pictures/Articles/workflow-office-365-004-small.png)
![](/Pictures/Articles/workflow-office-365-005.png)
In the left menu open Apps for SharePoint, click Upload. Browse to HarePointWorkflowExtensionsO365.app file on your disk and click OK:
![](/Pictures/Articles/workflow-office-365-006-small.png)
Add HarePoint Workflow Extensions for Office 365 to your site.
![](/Pictures/Articles/workflow-office-365-007-small.png)
Go to Site Contents on your site and click New – App:
![](/Pictures/Articles/workflow-office-365-008-small.png)
In the Apps you can add section, click on HarePoint Workflow Extensions for Office 365:
![](/Pictures/Articles/workflow-office-365-009-small.png)
Click Trust It in the pop up window:
![](/Pictures/Articles/workflow-office-365-010-small.png)
HarePoint Workflow Extensions for Office 365 app will shortly appear under Site Contents on your site:
![](/Pictures/Articles/workflow-office-365-011-small.png)
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