Been trying to figure out how to do these two things.
1. Make it so users cannot change the password. A group of user will have on login and I don't want one of them to get snarky and go changing it.
2. Make the whole thing view only unless you are logged in as me.
We have a strict "one question per thread policy" that you agreed to respect when signing up. Please respect it in the future. Permissions to upload are being set in the groups panel. Read up the corresponding section of the docs. Giving multiple users the same login account is just a silly idea and not recommended at all. Has been discussed before, please search the board for such discussions. I strongly suggest to review the entire idea to give them only one login.