Add/Edit a SharePoint Server Source - Panel

When you have the required privileges, you can include SharePoint on-premises content and make it searchable. This source can be shared, private, or secured (see Source Permission Types). Your SharePoint Server source is refreshed every 15 minutes to retrieve SharePoint item changes (addition, modification, or deletion). A source rescan or rebuild is necessary to capture deleted user profiles.

The SharePoint Server source allows you to make SharePoint on-premises content searchable. To retrieve SharePoint Online content, you must create a SharePoint Online source (Add/Edit SharePoint Online Source).