Is with Reckon Accounts Accounting we can manage 3-4 grocery branches which they use Reckon Pos?

Hey Vahid, welcome to the Community. POS is a single site license so by default this would not be possible. You could look into contacting a Reckon Consultant who specialises in POS. http://home.reckon.com.au/support/Home/ReckonSupport/FindAReckonAccreditedPartner.aspx

Thanks,
Mirko