Can a Woman Own More than One Slave?

Technically no. There may be some back woods country where a woman rebel might have such a power but in most countries, just as a man cannot own a slave neither can a woman unless she is married to him. Even then a slave that insists must be freed or the owner might find themselves in a loss of freedom.

A Lady can however train more than one man. In fact for FemDom to spread, it would seem natural that an experienced Domme would train both a wife and her slave. Like dog training, both the dog and owner are there. Sometimes the owner will hand over the leash to the trainer but the main point is that both owner and slave learn together to be a team. For the sake of propriety a woman should never be alone with another woman's man. I can see as FemDom grows, where couples come together for work groups in which women share new ideas and hypnotic techniques with their sisters and demonstrating it on their men. Football night would be a good time with all the males watching the big screen full of swirls and hypnotic patterns. They could be shown the last moments of the game and made to think they saw it all and had such a great time they want to do it again. Of course once they were all collared there would be no need for the pretense, they would just obediently sit in trance accepting any new hypnotic commands the women wanted to try out on them. They will want to return only remembering they had a great time but not why.;-)