Player handicaps can be set up in:
Setup > Statistic Setup > Handicaps
A handicap is single statistic for a player effective at a single point in time:
e.g. a player might have a value of -5 April 1st and -6 May 1st.
You can choose to show these values after the player's name within the public league website:
e.g. Paul Wright [-6]
And choose whether to show these values on a the public league website statistics pages.