I’m sorry, I don’t know how this works but if I pay the deposit, do I sign the enrollment agreement on the same day, or are they typically due on separate dates?
In my experience, which is only a handful of schools where my D was accepted, May 1 is the deadline for both. But you can accept the offer and then send in the deposit later, as long as it’s by May 1. You’re not formally enrolled until you do both. (sending a deposit before accepting would be odd - not sure it’s even possible).
Normally you SIR Statement of Intent to Register to the college and pay an enrollment deposit to hold your spot. You are given a deadline for when you need to SIR. For regular decision, it is May 1 for most colleges.