You can transfer a campaign from one user to another by clicking on the campaign page.
Choose the campaign you want to transfer and click "Transfer Campaign"
You can choose to copy the campaign or move it to a different account. Type in the email you want to transfer the campaign to and click on "OK"
If someone transferred a campaign to you it will appear a small red number on top of your user name. The number shows how many campaigns you have pending.
Go to pending/approve campaign and click "accept" to approve the campaign.
You will now find the campaign under the page my Campaigns marked as a "Transferred campaign". This will not be visible when distributing.