Hide report link/Folder in BI Workspace

Hi ,

I have a requirement to hide folders inside a BI workspace navigation for specific user group. In the workspace I have 2 folders ( Folder A and Folder B ) and 2 user groups (UGA and UGB). As per the requirement UGA and UGB should have View access to the Workspace but UGA should see only Folder A and UGB should see only FolderB.

Please let me know if any options to hide or restrict the access only specific folders insid BI Workspace.

System Details:

Version: BI 4.0 SP4

Regards,

Saranya