The My Channels tab is designed for simplified analytics.
You can create channels of different social networks and link an individual referral link to each of them, so that you can track which traffic source is more efficient and which is less efficient.
In addition to creating referral links for individual traffic sources (which record all clicks, registrations, etc.), in the tab of your channel you can record your spending to keep the dynamics of expenses and income (income from the referral link is recorded automatically).
To add an expense you can click on the plus sign near the expenses table:
On the main page of the affiliate program you will see the total dynamics of your expenses/income, all your channels and the total number of users who came through your links.
For full work with the affiliate program it is recommended to use three tabs as much as possible: Authors & contracts, Promo, My Channels.