What is the format for PDGA leagues?

PDGA league sessions include 6 to 10 weeks of singles play. No doubles yet.  Players enter standard PDGA divisions or the league can be run where everyone participates in one handicap division as long as the TD reports players' raw scores to the PDGA site within standard PDGA divisions so players can earn ratings. The League Director or assistant must be a PDGA Certified Official and they are allowed to play.