Help creating a fundraising campaign page for pledges/donations.

Our school PTA needs a page where all 450 students/families can log in and make pledges/donations and track process for each one. Where do I even start?

HI, please review Site Members: About the Member's Area | Help Center | Wix.com , Wix Editor: About PayPal Buttons | Help Center | Wix.com or use https://www.wix.com/arena/info/how-it-works