If you set the "Terminate after" setting to 0 minutes during the creation of an all-purpose compute, it means that the auto-termination feature will be turned off. This is because the "Terminate after" setting is used to specify an inactivity period in minutes after which you want the compute to terminate. If the difference between the current time and the last command run on the compute is more than the inactivity period specified, Databricks automatically terminates that compute. Therefore, by setting it to 0, you are essentially opting out of auto-termination. This means that the compute will continue to run until it is manually terminated, regardless of whether it is active or idle. Please note that idle compute continue to accumulate DBU and cloud instance charges during the inactivity period before termination

https://docs.databricks.com/en/compute/clusters-manage.html#configure-automatic-termination

I am not sure how if the community edition has any restriction on that though.