The simplest way to add students to your team (particularly in large courses) is to email the link to the team to everybody on your SIS roster. The team link can be found by clicking the ellipses next to the team name and selecting "Get link to team." Students will click the link in their email and automatically be added to the team.

You can also add individual members by selecting the "Add member" option. This will bring up a dialogue box allowing you to search for any individual at UVA.