Cube access control cubes

When an application with an OLAP database is created, a cube named #_TABACC is generated for the database. #_TABACC is a two dimensional cube. The application and data access roles are shown on the #__GRP__ dimension. The second dimension contains a list of all available cubes. You can use the cube to assign READ, WRITE, NONE, or DEFAULT rights for roles and a cube. Specify the appropriate access level in the cell located at the intersection of the cube name and role you want to administer.
Caution: 
If a user has Administer OLAP Database permission, no data access permissions are checked.
Note:  The cube must be enabled for Cube access control to apply this setting to an OLAP model.

This table describes an example of a #_TABACC access cube from the Samples OLAP database with two cubes (#_TABACC and SALES) and these standard roles: BulkImport, Designer, ViewRole, AdministratorRole, MasterRole. In this example, all roles have default permissions for both cubes. Samples can be enabled only in on-premises environments.

LOCAL/Samples
#_TABACC
#__GRP__ #TABACC SALES
BulkImport Default Default
Designer Default Default
ViewRole Default Default
AdministratorRole Default Default
MasterRole Default Default