@RMillerTWG The only way to do this is to go into the Account Management -> Account Settings tab and "Lock" the lock next to the Waiting Room setting. This will force waiting room off on those meetings.
However, if the setting "Require that all meetings are secured with one security option" is enabled, regardless of locking waiting room off, if there is NO password on a meeting waiting room will still be enabled.
If going this route, I would recommend locking the setting "Require a passcode when scheduling new meetings" and selecting the sub option "Require a passcode for meetings which have already been scheduled" which would set a password for anything already scheduled and allow waiting room to be turned off.
If the setting "Require that all meetings are secured with one security option" is disabled, then you can lock the waiting room off without issue.
I personally recommend that these users manually go into their meetings and make sure a password is set if needed and that waiting room is turned off. This is the least intrusive method and allows those users to make the changes on their own and know what setting their meeting has. This also allows them to send new meeting links if they are forced to have a password on their meetings.
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