This is possible in the most recent versions (starting from JSD 7.4.0 at least) of JIRA Service Desk (see screenshot in the answer from Tiffany below). But I'm sure it must have been added in a recent version as I wasn't able to do it either before we upgraded about 6 weeks ago.
Hey admins! I’m Dave, Principal Product Manager here at Atlassian working on our cloud platform and security products. Cloud security is a moving target. As you adopt more products, employees consta...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs