Very few timeouts are used here too, usually for one child getting through a phase now and then until they realize that I do not allow certain behaviours, period. I have a chair in the corner of the room and after they calm down I talk to them eye to eye and make them apologize to their friend if they hurt someone.

I don't use a certain time because I think toddlers have the attention span of fruit flies so if you leave them too long they won't even remember why they are there. The idea is to remove them from the play and let them calm down or know that it isn't fun to have a timeout and miss out on things. I also remove toys and put them up high where they can be seen but not touched if they don't share.

All children are different and you have to find out what works best with each child. And consistency and never caving in to them will work.