How to allow the user to enter the amount they wish to contribute?

Hi - can you allow the user to enter the amount they wish to contribute every month? And then is it possible to update the amount? (say they want to increase their donation)

Thank you for reaching support,

Using one of one our available payment integrations, you may select the Payment type to "User Defined Amount":

Here is the related guide: https://www.jotform.com/help/275-how-to-pass-a-calculation-to-a-payment-field

I hope that helps.

Best.