Filter Reservation made from different Booking Engine for reporting purpose

1.) What is the idea/improvement you'd like to see implemented?

as Property Manager, I would like to be able to filter reservation made from different booking engine.

2.) What problem would this solve for you?

We already have ability to create different and personalized (although limited) booking engine, we will create each one to our traditional travel agent network, bigger corporate accounts or influencer partner so they can direct make a booking with us. We would like to filter each of the booking

3.) What are you currently doing to work around this issue?

We have to manually create a custom fields and export csv/excel reservation files and filter booking made by each of different direct booking source. This is very time consuming. 

This is super important as time goes by the OTAs platforms are getting more and more unfair towards Host/Operator and we cannot rely only from OTAs for business.

Kind Regards