Disable Omnifocus Sync / Delete Cloud Data / Offline usage

Hi friends,

for a school project I need to use OF, however we are not allowed to use any cloud services. The computer also does not allow an Internet connection for security reasons.

My questions are:

  1. How is your process to disable Cloud-Synching entirely for an OF Data base and delete the cloud data entirely from the OF Server?

  2. What do I need to take care of, when I want to use this project completely offline on that school-computer?

Thank you!

*Maybe helpful for the answers: