A computer-readable media, system, and method for providing role-based access management to channels within a group-based communication system. Role-based access management allows for a plurality of roles to be established and for users to be associated with these roles. Roles may be associated with sets of permissions allowing users assigned to the respective role to perform various actions within the group-based communication system. The group-based communication system may include preset, system roles with predetermined permissions and custom, user-defined roles may be created by administrators within the group-based communication system.