When defining a billing schedule, you can apply all or a portion of the project retainer to future invoices. To do so:
Click Billing on the navigation bar and then click the Billing Schedule tab.
Select the desired Project from the list and create billing records for it.
Next, check the Retainer Amount and, if available, enter a Retainer in the grid. Alternatively, enter a percent value in the % Ret field. Web Suite calculates and inserts the amount in the Retainer field.
Web Suite reduces the Net Bill by that amount and carries forward these billing records to the Billing Review screen for processing.