Adding required fields / switching off payment methods for certain campaigns

Hi

1. I’ve taken a look around the plugin, it is great and we will be using it. However, I would like to add some fields to the donation form and also make some more fields compulsory (for example making the phone number or address ‘required’). Is there an easy way to do this? I’ve looked through the settings but I can’t seem to find a way to edit the personal info form at all. If not, can you tell me which PHP file I would find the code for this? Thanks

2. Is it possible to turn off Paypal/other methods for certain campaigns or is it all-or-nothing?

thank you!