Does the CR1000A really only allow 2.4ghz for guest wifi?

I was testing the CR1000A router I got for free as part of the new 300mbps Fios plan I signed up for, and it works for everything but guest wifi. My wife works from home with employer provided equipment. I obviously want that equipment on an isolated guest network. Unfortunately, 2.4ghz simply isn't fast enough for her job.

Is there any way to get the CR1000A to do 5ghz guest wifi?