Check out the manual on the eclipse website
http://www.planeteclipse.com/Folders/Downloads/Manuals/ETEGM06V2.pdf If that doesn't work, this is how in the loooong form lol. If you take your grips off you'll see the red tournament lock button. With your marker switched on, press it. the LEDs will flash red, saying that it's off (if it flashes green do it again, green is tourney lock on). Switch marker off. Hold the trigger in, then switch your marker on. The top and bottom LEDs will flash white, release the trigger and it'll settle on red (firing mode). press the "on" button until you get to the purple setting, which is dwell. tap the trigger and it'll tell you what it's set at (E= 10s G=1s O=0.1s, ie 12.3 would be E, G, G, O, O, O). Hold the trigger in through the whole thing until it stops at a solid purple E. You can now set the dwell. Tap the trigger once (the E will flash once), then press the "on" button to go to the G, tap the trigger 3 times, then press the "on" button twice. All the LEDs should flash green to say it's accepted the new setting of 13ms.