we have given our independent house on Leave & Licence basis to 3 boys for 11 months @ 18,000/- p.m. The Agreement is stamped and registered. Now they want to bring in another boy and pay addiional 2000 i.e. Rs.20,000/- p.m, What do i do, should i make an addendum to the L&L Agreement and should this also be stamped and regisered? They say a simple notarised agreement will do and we need not do a registered deed. .