Security that enables "Schedule" button for DCP

Hi,

We are currently testing DCP on BI4.1, in CMC we have set permission access on Desktop Intelligence Application to "View on Demand".  Using this permission setting, we can open Deski Client and import/refresh Deski report from BI4.  However the issue we have is that the "schedule" icon is disabled and cannot be selected.

When the permission access is changed to "Full Control", the "schedule" button is enabled.

I wanted to know if anyone knows which precise subset of Deski rights that will enable or disable the "schedule" button in Deski Client.

None of the rights selection have schedule in the description, so not exactly sure which one enables it.

Thanks

Vincent