Realtor as POA for Closing

[Manco Snead]

Greetings,

I'm buying an out of state property and there is a time crunch for the closing date regarding fedexing docs to me in time. To resolve the issue my realtor is suggesting I use his assistant (also a realtor) as POA to sign closing docs. The credit union that is financing is ok with this arrangement. But this is a new one to me. Is this common and legit?

Much thanks.