Possible to set it for Variable amount?

Hi, first off, I love the plugin, and have had no issues with it.

I did want to ask, is it possible to set it up so that customers can set their own payment amount? Some services I offer use the option for customers to make partial payments, or to set their own price (as long as its above a certain value.
So an option to have them be able to enter in their own dollar amount would be great, but I didn’t see how this could be done, or if it was possible? If not, is this something that could be added?

Thanks!