PPM 6.0 - Portfolio Item Mass update configuration

Hi PPM Experts,

I would like to remove a particular field from the Mass update screen(Portfolio items) and the same should be available in item dashboard. In SPRO, can see the item dashboard configuration and can be controlled.

System/Version: PPM 6.0

Questions: How do we control(remove/enable or disable edit) the Mass update screen fields for Portfolio items?

Thanks for your help in advance.

Uday