Go to the tab Publishers on offer page and follow the steps below:
Add special payout on publisher when offer is CPI
If the offer is CPI, that means that the payout is applied to the Default event. In this case:
Select "Default" Event
Select Payout tab
You will see the Default WeGet and TheyGet of the offer
Then you can click on the edit button and edit the payouts there
Add special payout on publisher when offer is CPA
If the offer is CPA, that means that the payout is not the Default event, instead, the payouts are on the event. In this case
Select the event that you want to edit the payout for
Select Payout tab
You will see the WeGet and TheyGet of the offer for that event
Then you can click on the edit button
Select (S) from the dropdown to indicate that is a special payout
Edit the payouts for that publisher and then click Save
Tip
You will identify that it is a special payout by the letter (S) as shown in the image below:
Targeted Payouts
To learn how to setup Targeted payouts on an offer read this article.