Automatically join Mac to office wifi network in Jamf

At a very basic level you would use a configuration profile with a network payload.
If your network is simply using WPA/WPA2 Personal (a regular password) it is easy enough to create the config profile.

If you are using something more sophisticated like 802.1x EAP-TLS things get a little more involved.
https://help.apple.com/deployment/macos/#/apd7b6d34790
http://support.apple.com/kb/HT5357
https://www.afp548.com/2012/11/20/802-1x-eaptls-machine-auth-mtlion-adcerts/

I use a configuration profile for this. It's really simple to do. Configuration profiles are setup in Computers - Cofiguration Profiles. Here's a screenshot. In the General section, name your profile. After you add the settings for your WiFi network, don't forget to scope the configuration profile. And remember to test, test, and test again before pushing it out to your managed systems, or you will have users get very angry with you. I like to test WiFi configuration profiles on my own Mac or a system that is dedicated for testing.

Having a secondary wireless network is always a good safety measure as well, especially if both are configured via profile; I maintain separate profiles and SSIDs for both my 5.0 and 2.4 GHz networks.