Open Team to invite a member, review sent invitations in Invitations, and manage member roles and creator access in Members.

Open Team, then Members.
Choose Invite Member.
Enter the email address, select an available role under Role, and choose Send invitation.
If Invite Member or the Role selector is missing or locked, ask the workspace owner to review your access.
Open Invitations to review sent invitations and filter them by Pending, Accepted, or Expired. For a pending invitation, use Revoke when that action is available to you.
In Members, use the available controls to change a member's role or creator access. If those controls are missing or locked, ask the workspace owner to review your access.