I need an expert in Cross because I have a website that allows me to book medical appointments. However, when I try to fill out the appointment form, the site does not allow me to select my preferred medical center.

I want to modify this so that I can freely choose any medical center for my appointment.

I have already built a dashboard, and I only need someone to handle the Cross request functionality.

Additionally, the site requires pay.ment to confirm the appointment. I want to ensure that pay.ments can be made directly using a Red.topay card.