Adside does not charge per seat, so invite everyone who touches the work. Team management lives under your agency's Settings > Members.
Two ways to invite
Email invitation: enter an address and pick a role. They get an email and land in your agency when they accept.
Invite link: generate a shareable link anyone can use to join as a member. Links do not expire, count their uses, and can be revoked any time. Convenient, but treat the URL like a key to the office.
The roles
Owner: full control, including billing and deleting things that matter.
Admin: everything an owner can do day to day: manage members, clients and settings.
Member: works in every client (chat, research, reports) but does not manage members, billing or destructive settings.
External: sees nothing by default. Access is granted per client, which is how you let a customer into only their own workspace. See Give a client reporting-only access.
Roles can be changed and members removed from the same page. Invitations show as pending until accepted.