Intregration
From here you can Integrate Timesheet application with other application.
Configure SharePoint API Permission
This setting will work if SharePoint API is enabled, you can configure it by visiting Settings-General.
Integrate with Time-Off Manager
By enabling this toggle, you can integrate the "Time Off Manager" app, which should be installed on the same site.
Configure Graph API
Enable this toggle to fetch your EXO properties in Custom fields.