Only Owners can invite people.
Go to Settings → People & Access
Click Invite people
Enter their email address
Choose a role: Member or Owner
Click Send invitation
They'll receive a one-time link by email. They must sign in with the same email address the invite was sent to. IIf they don't have an account yet, signing up with that email brings them back to the invitation, where they click Accept to join.
Roles:
Member: can use shared integrations and run automations in the workspace
Owner: can do everything a Member can, plus manage members, connect workspace apps, configure app policies, and delete the workspace
Seat cap: Workspaces have a maximum number of seats. The cap counts active members plus pending invites that haven't expired yet. If you've hit the cap, you'll see a Request more seats link when trying to invite someone.
Pending invites: Invite links expire after a few days. Go to Settings → click the workspace row → People & Access to see pending invites, resend them (rotates the token if expired), or cancel them.
Changing a role: Click a member's row in the People & Access tab. Use the Role dropdown in the member drawer.
Removing a member: Click their row and select Remove from workspace. Their access is revoked immediately.
⚠️ Every workspace must have at least one Owner. If you're the only Owner, you can't leave or be removed until you promote someone else first.