How do I invoice for my sales fee?

To invoice the vendor's solicitor for the fee on the sale, upon exchange, you can generate and send out the 'Exchange of Contracts and Invoice' letter.

This is available under the 'Letters & Emails' side-menu, in the 'To Vendor's Solicitor' set of correspondence:

If you see the following message 'This email cannot be generated since there is no available recipient' when following these steps, then the solicitor hasn't been linked to the property yet. 

To link the solicitor, you would go to the 'Sales Details' tab on the right-hand side and click 'Edit' at the top of the page. You will be able to select the solicitor from the dropdown. If the solicitor is not on the system, you can follow these steps here.