Add tabs with SharePoint items

1. From a channel, select Shared on the toolbar and choose  Open in SharePoint. From here you can navigate anywhere on your team's SharePoint site. 

2. Open the SharePoint item in a browser and copy the URL from the address bar.

3. In the left nav pane, select  Apps and choose SharePoint.
   Search "SharePoint" if you don't see the SharePoint tile.

4. If it hasn't been installed, select Add.

5. Select Open, and choose a channel to add SharePoint to and choose Go. 

6. In the SharePoint dialog, select Any SharePoint site and paste the link copied earlier into the field.

7. Select or clear Post to the channel about this tab and choose Save.

The tab appears on the top toolbar. Right-click the tab to rename, remove, or do other tasks.