Configuration blocks for hiding /limiting items of a drop down to two group of users

I have a Spotfire analytic with a drop down for Quantity and Value, I want to show both Quantity and Value items of the drop down for members of a particular 'mail group' and only Quantity option of the drop down for a particluar 'mail group'. Data is coming via direct connection to SAP BW database.

Please can someone suggest a soultion ?

(1) Answer