Members, easier to manage
Organization → Members has the Active and Pending tabs (Pending · N), the Search by name or email box, the Role filter, pagination and Export CSV.
Add members invites several people by email with validation and counts the free seats; Pending is the tray for those who haven’t joined, with Resend and Cancel invitation on each row, who invited them and when. Confirmations state their consequences, the seat cap leads to Billing and whatever is disabled shows its reason.
More in Managing members.