Go to the My Subscription window from the switcher.
If you have a single subscription, you will directly see the Subscription Summary. If you have more than one, you will have to choose the Subscription you wish to manage as shown below. 
Select Edit next to the Plan and User section on the screen.
In the text box under Total Users enter the number of users you need. When you want to reduce the count, enter fewer than you currently have. The billing amount will change accordingly.
Click Update Subscription.
Your subscription edit will change as per your billing schedule.
Note -
- When you reduce the number of licenses you have, your change will only be reflected in the next billing period, once the current subscription is complete.
- If you do not have a saved card in your subscription ( that is, you do not pay online), you are an offline paying customer, please get in touch with us since you cannot reduce your license count online. You can reach us at [email protected].