To invite a publisher to your programme, first go to Account Management > Publisher Management > Find Publishers and search for a publisher you want to invite to your programme. Then click the icon in the Action column to view the publisher profile.
In the left-hand panel of the publisher profile click the button Invite Publisher. If the publisher has different ad spaces, select the ad space with which you want to invite the publisher to your programme. You may also enter a short message, introducing yourself and outlining why you think joining your programme will benefit the publisher.