Enable/Disable Save As in workbook

I'm looking for help in being able to selectively disable the 'Save As' capability in Excel. I have a template in which end users should not be able to use the Save As command, but admins (using a password-protected UserForm would have ability to Save As for maintenance purposes). I have used the following code:

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This works perfectly to disable the Save As process, but I would like to enable it for admins via an option on an admin UserForm (I use radio buttons on the UserForm with an execute button). Hopefully this makes sense.

Thanks! I hadn't thought about using a Range lookup. Works perfectly.