If you do not have any free licenses make sure you purchase enough licenses on the Subscription page.
You will be able to change the user count at the bottom of your plan if you are currently subscribed to a Pro or Business plan.
We then display an Instant fee which will be charged right away according to the progress of your current subscription period.
Your next payment will be automatically adjusted to your new user count.
Multiple licenses can also be purchased at the same time you purchase a license for yourself: