Only an administrator can add and remove members from your subscription plan.
Hover the cursor on your profile picture and then click on the Premium Billing option on the drop-down menu.
Click the small trash can icon beside the team member you want to remove. Confirm team member removal by clicking the tick icon. If you don't want to remove the team member, click the cross icon instead.
Removing the team member is almost instant. Once you've confirmed your choice, the system may take several seconds to remove the member from your team.