Reach out to our Customer Success team to gain access to this feature.
You can now manage your organization's users by going to your user in the top right corner and selecting 'Manage Account' from the drop down.
Below your organization's name and product licenses you will see your team's total seat count and availability, along with the ability to send individual invites to team members.
Once your team members have accepted their invites and signed in to the platform, you will have the ability to manage each user's licenses as well as the ability to share admin privileges.