Board Thread:Support Requests - Getting Started/@comment-37194541-20191021014422/@comment-366087-20191021025042

There *is* a tool designed to lockdown an entire wiki for varied periods of time UPTO 12 hours. It is used by Staff, including Support, and VSTF for instances of serious vandalism to give them a chance to repair a wiki in peace.

Since you're talking about a Staff Support team coming to your wiki, they'll probably have the tool and can/might use it if they feel the need.