Have multiple wifi hotspots in config file

I take my Raspberry Pi 3 From work to home everyday. As It stands, I have to reconfigure as needed when moving between these two places. Wifi SSIDS are different at both places. I Have it set up to be a headless Usenet server.

Is there a way to have my Diet-pi config automatically go from one to another without editing a file every time i go from work to home? I have searched all over to find a solution. any Help or guidance is greatly appreciated!!