Artificial pollination of monoecious plants is used for cucumbers, zucchini, pumpkins, watermelons, melons, etc., in places where cross-pollination by bees is impossible - hotbeds, greenhouses, grow boxes, premises.
The essence of pollination is very simple - you need to transfer pollen from the stamens of the male flower to the pistil of the female, after which the ovary of the female flower continues its development into the fruit, otherwise (without pollination) the ovary dies off.