CRM 2011 Custom reports : Enable Export report data button

Hi All,

When i login as a domain user with "Customer service representative" security role i can't see the save button to export the report data such as Export to excel , export to pdf etc...  But if i login as CRM administrator i can see the save button on the report. I would like to know how is it being controlled in CRM 2011.

Any suggestion is much appriciated.

Thanks !. 

SAFI