You can assign the following four access levels to your users in a campaign:
Owners have superpowers to manage a campaign in its entirity and tailor member access. Campaigns usually have a handful of owners.
Collaborators have view and edit rights to all sections of a campaign. Use this access level for the core team on a campaign.
Participants have view rights to most sections of a campaign (except the funding section). Participants can edit activities and assets.
This level is for users who contribute to specific deliverables on a campaign.
Viewers have view only access to all sections of a campaign.