Deleting sessions ability

I have the membership but when I have an event scheduled in sessions that is running, it still shows me the ability to delete it midway through the session. To stop this I have to just make a new one each time that is separate from the sessions. Could you add an option to just block the apps entirely for 24 hours every day and not be able to delete the session. And also if possible to add a way for the apps to continue being blocked even if opal is deleted.