The security cube

Security settings for dimension members are stored in a security cube called }ElementSecurity_dimension_name cube.

The }ElementSecurity_dimension_name cube does not exist by default, and all users have access to the dimension members by default.

When you edit the security setting for a dimension for the first time in the dimension editor, or create a user group, you are prompted to create a security cube.

When the security cube is created, users must be given explicit write access to all of the members in the dimension.

The security cube contains the following dimensions:
Dimension_name
The dimension and members for which the security cube is created for.
}Groups
User groups that are defined for the TM1® database.

The }ElementSecurity_dimension_name cube is in the Control Objects > Cubes node of the data tree.