Handy tip if you want to filter based on applications only
Note: The StoreFront and PowerShell consoles cannot be open at the same time. Always close the StoreFront MMC before using the PowerShell console to administer your StoreFront configuration. Likewise, close any instances of PowerShell before opening the StoreFront MMC.
This example will set allowed resource types to applications only:
Set-DSResourceFilterType -SiteId 1 -VirtualPath "/Citrix/Store" -IncludeTypes @("Applications")