There are 3 different roles in a Clan:

• Leader: By default, the founder of a Clan is assigned the role of Leader. This will only change if the Leader steps down and promotes someone else or leaves the Clan, in which case, the role will be automatically assigned to an active Officer. There can only be one leader per Clan. Leaders can perform all actions: Edit requirements, accept/decline requests, promote/demote anyone in the clan, kick Officers or Members out, edit announcements, and invite other players even if they don’t meet the Clan’s requirements. Leaders can also disband the Clan. 
• Officers: Officers can accept/decline requests, invite other players even if they don’t meet the Clan’s requirements, edit clan announcements, and kick Members out.
• Members: This is the role automatically assigned to any new-joiner in a Clan. Members can invite other players as long as they meet the Clan’s requirements.