Reg: Validate Check box is disabled for the specific responsibility

Hi Team,
User would like to enable the validate check box for the AP invoices specifically to a set of responsibilities.

I checked with the setup>options>payables>invoice tab> allow online validation checkbox

I verified the setup with a specific invoice with status 'Needs Revalidation', The validate button is enabled for me even when i checked it and even in the uncheck mode.

Can anybody please confirm me whether this is only setup we need to include for this?

Thanks and Regards,
Muthulakshmi T.