for more details (LZ, parking etc) see : http://paragliding.earth/?site=7958
Access
Chairlift from Flumserberg: http://www.flumserberg.ch/Sommer/Bergbahnen
Rules
Airspaces in Switzerland are a tough subject, get all the info you can get before flying: www.flyland.ch.
DABS (active danger areas etc): www.skybriefing.com/portal/