I have a custom field called "Office Location" (such as San Jose, Morgan Hill, Alameda & Remote). I also have groups called agent_sanjose, agent_morganhill, agent_alameda...) and added agents to specific group depending on their location.

Currently, when user create a new ticket and select the location, whoever in that location receive an email notification.
Now, I want to create another location called "San Francisco" & group called agent_sanfrancisco; however, I am able to add a location but don't know how to link new location to new group.
Please help. I'm looking every where in the Jira portal and couldn't find any clue that how they was linked together. Our previous Jira Admin is no longer with the company.