To change member roles, you must have the same role or a higher role than the member you are modifying.
If you need to modify the role a member has, follow the steps below:
While logged in, click People at the top of your account.
In the new modal that appears, select Manage people.
Find the member you wish to modify, then click the ellipsis ⋮ .
Depending on what current role the member has, you will see various options; select the modification you wish to apply the change immediately:
Promote to account owner
Revoke account ownership
Promote to organization member
Demote to limited dashboard access
Manage dashboard access (only for limited access members)
Resend invite
Delete user