Hi Balram,
this should be an OOTB feature, I suggest you to open ticket on CA Support.
But if you want to do this by yourself, you can modify load_properties.htmpl form,
this form is loading to workframe on each category change,
you can add simple code into it:
<PDM_IF "$args.producer_id" == "chg">
ahdframeset.ahdframe.document.main_form["SET.group"] = <PDM_FMT ESC_STYLE=C>"$args.category.group.REL_ATTR"</PDM_FMT>;
ahdframeset.ahdframe.document.main_form["KEY.group"] = <PDM_FMT ESC_STYLE=C>"$args.category.group.COMMON_NAME"</PDM_FMT>;
ahdframeset.ahdframe.document.main_form["SET.assignee"] = <PDM_FMT ESC_STYLE=C>"$args.category.assignee.REL_ATTR"</PDM_FMT>;
ahdframeset.ahdframe.document.main_form["KEY.assignee"] = <PDM_FMT ESC_STYLE=C>"$args.category.assignee.COMMON_NAME"</PDM_FMT>;
</PDM_IF>
This code isn't tested, so use it at your own risk.
Regards,
cdtj
#helpinghands