Lizbids, you have to step off ONTO the foot/pedal you plan to leave clipped in--that means you unclip the foot you want to put on the ground, step off the saddle and put your weight onto the other pedal where you plan to stay clipped in (while NOT leaning). Then you step forward onto the unclipped foot, and bring the clipped foot back up to about the 2 o'clock position, ready to go again.
"My predominant feeling is one of gratitude. I have loved and been loved;I have been given much and I have given something in return...Above all, I have been a sentient being, a thinking animal, on this beautiful planet, and that in itself has been an enormous privilege and an adventure." O. Sacks