[Koha] Patron Club feature

Hi all, We recently upgraded to 17.05.01 from 16.11.05. When we try to use the clubs feature by clicking on Tools-> Patron Clubs link, we are getting 404 error. We dont seem to be having the clubs.pl file. What should we do ? Appreciate your inputs. Also, is there any write up or tutorial on the patron club feature ? -- Regards, Krishna