Hi, we are using OAS2025, OBIA7.6.4., EBS12.2.12, Oracle19c on Linux. We have our core subject areas whose fact tables are grown > two billion rows over time. We are planning to release DV in stages, first to a selected group of users on custom datasets only. We want DV users to do their Adhoc queries/create workbooks etc. only on custom datasets which are migrated for them but looks like in DV, allowing them access to custom datasets also give them access to the entire list of existing subject areas as well (which includes our gigantic core subject areas, big enough to bring the entire application to a screeching halt for wide open queries). We tried repository's presentation folder permissions, No Access there to DV User is over written by their Read or Default permissions of other roles that they have, Doing subject area access 'Denied' at front end application administration cuts off their access to the subject area in both OAS as well as DV. We want the DV users to keep their current access in OAS (for published content or Adhoc analysis or both) as is but when they go to DV they should only operate with custom datasets, created and migrated for them to query and build DV content using it (and NOT pull in the entire list of existing subject areas to be used along with custom dataset). Any tip/guidance on how to achieve that is highly appreciated.