I put the prolif in a cup or pot of growing medium and place it in a container with an inch of water to water it from the bottom. (same as I do seeds started outdoors before cold weather). It usually has good roots in a couple of weeks. The only reason I don't put them directly in the ground like Valerie, is due the the late summer heat when the prolif is needing harvested. 90f + temps are not favorable to start them directly in the ground unless it is in shade with regular water.
It is not uncommon for me to see some of the prolifs bloom on the mother plant. I had one plant with a prolif on each scape and all bloomed on the mother plant.
Here is a picture of one of my Galaxy Explosion seedlings.
This prolif had 5 blooms and was typical of multiple prolifs on this plant.