Partial payment option
There should be the option to pay parts of an Invoice. You might want to split it or need to wait for funds to come into your account.
Rebecca Schoon commented
The admin keeps saying it’s a changeable field but it isn’t (at least on mobile devices and this software should be able to be used on phones since many people keep up to date on business matters via smartphones). I click on it and a cursor appears but a keyboard doesn’t so I can’t change the amount.
I agree. Certain jobs require payment before, during, and after completing project.