Hover to the Clients Menu, select the Clients tab.
You will be redirected to the Clients list window, search for the name of the client under the Search Field box. You can click on edit button or double click on the client's name.
On the lower right part of the Client profile, there is a Client Funding section. Select the Plus Icon to add a funding.
A Client Funding page will pop-up. Fill out all the necessary information and then select then hit Save.