Drop Down Values filtering

Hi Everyone,

I have requirement like,

I created a table with drop downs and text view(incident group).

My requirement is I am populating  drop down values for each incident group which are maintained at SPRO level by using fill dropdowns method, but user expecting for particular (incident Group) row I have to delete one of the drop down value and display other drop down values nothing but user expecting only 4 values if 5 drop down values are there.

How can I achieve this.

Please help me.

Thanks in advance,

Pavan