By clicking on File / Logoff TM.Net (assuming you have already logged on to TM.Net)
2.
By clicking on File / Open and open a new database
3.
Exiting TEAM MANAGER
You are automatically looged off TM.Net when you download a current copy of your TM.Net database unless you Open it in Edit mode.
If you DID NOT log into TM.Net in edit mode, when you Logoff TM.Net, then any changes you have made to the database will not be uploaded to TM.Net.