After experimenting, I found that if I directly /disable'd the group from inside the script it worked, so I thought the problem was solved, by instead of changing %botquiet, I could just disable the group.
Unfortunately, despite the fact the mIRC documentation says that "This disables the specified groups in all scripts", I cannot disable the group from any other script, only the script the group is in directly. I cannot /disable the group from mIRC itself either, only from within the specific script, so this takes me back to stage one
Am I doing something wrong here?
I apreciate any help, thanks to those that have already helped
Edit: If I use /disable *, it gets disabled, but no other way. I dont really want to disable every single group though