Applying S2 visa dependent visa for father-in-law

Prakash, yes, you can. First, the following should be prepared including the passports and their photocopies of your father-in-law and mother-in-law, the application forms and their recently-taken color photo, your passport residence permit and their copy, the invitation letter issued from you as well as the relationship certification between them and you. And next submit these materials to the CVASC and wait for the result.