Any user type on any account can create multiple accounts, except for members of accounts that have a SAML SSO integration. They won't be able to create an additional new account with the same login credentials due to the limitations of SAML SSO.
If you already have multiple Wrike accounts, switching between them is simple.
If you're a member of three or fewer accounts:
Click your profile picture in the top right-hand corner of your Wrike workspace 1.
Select the account you want to switch to from the Accounts section of the drop-down 2.
If you're a member of four or more accounts:
Click your profile picture in the top right-hand corner of your Wrike workspace.
Hover over Switch to another account.
Click the account you'd like to switch to.
A red dot appears next to your profile image (in your workspace's upper right-hand corner) when you have unread Inbox notifications from other accounts. Click your profile image and Switch to another account to see which account has the unread notifications.