To be able to create the new user for dimensions 3.0, You need to log into your Access Evo admin account, from here
Click the member Tab if the user has been created.
Click the 3 dot menu then click the manage role tab.
This then opens another window, find dimensions and select it.
This then opens a box on the right-hand side, find the database that the user requires access to.
select the drop-down box and assign the new user the role of user.
Click Save.