RE: Can you limit user access using Dimension
To grant access to dimensions:
On the Home page, select Application, and then click the application name to display the Application Overview.
From the application Overview screen, select Dimensions and Models
Click the name of the dimension for which you want to grant access.
From the Dimension Overview screen, select Access. The name of the selected dimension is displayed at the top of the screen.
Click Add User/Group buttonand select the users to which you want to assign access, as follows:
Select the user type:
Users
Groups
Users and Groups
On the Select User dialog box, enter the first few letters for the user name in the text box, and then click Search Search icon to populate the list of names. To display all users and groups, enter an asterisk "*" as a wildcard in the Search field.
Select the users and groups to which you want to assign access, and then click OK.
From the Access tab Access tab, select Administer to enable the user or group to view, modify, or delete the dimension.
Optional: Select Remove to delete the selected user or group from the list. Highlight the name, and then click X to remove the name and any associated permissions.
Click Close.
Hope this information is helpful to you.