Yes, as an Agency Manager, you can add flat fees to your Preferred Agencies and invite new agencies with flat fees.

To do this, go to the "Agencies" tab, and in the action menu, select "Edit Fees."

Then, choose the "Flat fee" option. You'll be prompted to specify the currency the agency will be paid in and the amount you want to pay them in the "Agency Fee" field. For more details on agency fees, check out the processing fees FAQ article.

You can also invite new agencies with flat fees from the "Invite Agency" page.