Appian Pricing Clarification

We are planning to build an application using Appian that will be used by 5 to 10 users. According to pricing, we fall under the ≤ 200 users category, where each user costs $75.

My questions are:

1. Do we need to purchase licenses for each user (e.g., 5 users × $75), or is there a minimum user (threshold) purchase requirement that applies regardless of the actual number of users?
2. If there is a minimum purchase requirement, what is the minimum number of users we would need to pay for?