If you want to host an event or plan to have more guests than your subscription capacity allows, you can create a temporary reservation to increase your space capacity. Follow the steps in this guide to make a reservation. This reservation will add to the capacity you already have, and you'll only be charged for the increase in capacity.
For example, if you have a subscription for 30 concurrent users and you create a reservation for 20, you’ll have the capacity for 50 concurrent users during you temporary reservation.