Roles

When you're granted access to an ad account you're assigned a role which dictates your access level for that ad account. Which ad accounts you have access to, and which roles you have for them, can be updated at any time.

RoleDescription
Account AdminAccount Admins can update the settings of the ad accounts to which they're assigned, as well as manage methods of payment. They can also manage campaigns, creatives, events, and reports.
Campaign ManagerThe most commonly assigned Ad Account role, Campaign Managers can manage campaigns, creatives, event data, and reports. They can't adjust method of payment or ad account settings.
Audience ManagerAudience Managers can create, edit, and manage custom audiences. This is an API-specific role and currently can't be assigned to a human user.
ViewerViewers can review all account information and run reports, but they can't create campaigns or make changes to existing ones.