Private campaigns enable you to create campaigns that won't appear in the marketplace. Only you and the influencers you pitch will know of their existence.
To run a private campaign:
If you are are subscribed to the Regular or Advanced plan and want to set your campaign to private, select Don't do either under Marketplace Visibility Options when creating or editing a campaign.
On all plans, you have the ability to restrict your campaign to adult influencers (over age 21). Check This campaign is for adults only to do this.