While the pole is still stowed on deck, attach the topping lift and foreguy. Take up the slack in the topping lift. Leave a few feet of slack in the foreguy. If you're already sailing deep off the wind, the jib at this point Should be furled.
Release the pole from its chocks. Place the windward jib sheet in the upturned jaws.
Now you're ready to set the pole. Lift the aft end and push it forward, making sure that it's on the windward side of the forestay. Because the topping lift was tight, the forward end should end up above the pulpit or lifelines. The tight topping lift will help to keep it off the deck. Then attach the inboard end to the mast.
Adjust the outboard and inboard ends of the pole so they're the same height as the jib clew.
If you're already sailing close to dead downwind, make sure there's plenty of slack in the foreguy, then unfurl the jib and sheet it home, being careful that you stop winching before the pole touches the shrouds. If you're sailing on the wind, turn downwind; when the breeze is nearly dead behind the boat, jibe the jib to the windward side and sheet it in, as above. Either way works but I find it easier all around to start with the jib furled.
Now pull the foreguy tight; this sets you up to run wing and wing. Using this setup, you should be able to sail with the wind as far forward as 130-degrees apparent, although you may need to ease the pole forward a bit and furl some of your jib.
Once the sail is set, watch that your jib sheet and foreguy don't chafe on the lifelines; relead them if they do. To stow the pole, simply reverse the process.