Need a toggle for property ina a dimension

Hi Team,
I need your help on this one. 
I have table with sub program dimension and there few programs which are part of a group for that i have created a property (Boolean) that filters out those programs (Boolean because more programs can be part of that group in future so easily editable).
I need a feature on board where i need all sub programs on board on selector but a toggle like feature for that particular group. Just that when i click on that toggle only those programs part of a group should show on table and when i turn off/uncheck rest of program or all should be part of that group.
I tried creating a metric based dynamic variable, but it comes under that dimension not separately.
for eg when i edit the board and click on page selector options under sub program i see was as a group variable i.e. one item but on front end it shows all sub programs separately not under one item.

Can someone tell me how can i achieve this? What am i doing wrong with my approach?

Thanks in advance