If you want to have reservations coming in with the travel agency/company attached to them, then here are a few steps that need to be followed.
You would need to ask your Channel Manager to provide you with the list of channel manager codes for travel agencies. Then you will need to set up Company profiles and Travel agency contracts.
After go to Menu > Marketplace > My subscriptions > Channel Manager Settings > Channel manager companies. There at the top right corner, you can map the travel agency with the code that your Channel manager provided you with.
Also, you can enable the option "Create company and travel agency profiles".
For more information about Travel agency mapping, check out this article.