I have a Tier 2 plan and I have created mutliple workspaces. However, I can add new team members to only the first created workspace, not to the workspaces created additionally. When I went to add the new team member to my 2nd workspace, I got the message that I need to upgrade. Is this the limitation of the plan I am on? Do I need to purchase additional codes for each new workspace to add team members to it?