Open your referrals page (Bookings>Referrals).
According to the dates you have selected, Bookinglayer will show a list of all the bookings that have a partner associated with.
The total commission will be automatically calculated and shown at the bottom right corner of the referral's table, in all relevant currencies.
If you have the MA integration set up, bookings from your different channels (that you have set in your MA account) will come through to Bookinglayer with the associated referral.
Please note that you can also manually add a referral/partner to a booking via the booking's page: