After that select DASHBOARD option on top right corner then you will see this page...
Select manage markup tab.
Now click plus icon on the right hand side, then you will see this popup.
You have to select the following option...
1. Product Type - You could select Air/ hotels in which you want to add markup
2.Markup Type - You could select Airlines type which you want to markup Domestic/International/All
3.Amount Type - You have to select Fixed/Percentage option for markup
4.Value - You have to select the amount value
5.Airlines - You have to select All option
6.Pax Types - You could select types of pax Adult/child/Infant which you want to markup add then submit.