Is there a way to block changing the input source for channels and/or output? I have set user permissions and I'm afraid my guest users will "accidentally" alter the input source and create havoc. I had to bail out a user because they had pushed network input source for the mains and couldn't figure out why there was no sound. As a user they cannot change the patching but they can change the source. This can be confusing/harmful especially when done on the mains!