We've made some changes where you can find these settings in Jamf School with the release of 6.0.
The sync settings button has been removed from the DEP token and now has a separate page, you can only update a token or remove it from this page.
ASM & SFTP Settings
These settings now have their own tabs under Organisation > Settings
Sync all locations
If you want to automatically create all your locations in Jamf School based on your locations in Apple School Manager, you can enable the following:
When this setting is enabled Jamf School will automatically create locations and sync the data to those locations.