Pumping mothers

Question for all Mums that exclusively breast feed? How often do you pump and how can you keep producing 2-3 ounces per session even after baby has had a feed

Also do you generally pump thru out the day and freeze/store at the end of the day ? How does it work?

Also I m going to start work back in January and wanted to know how to store while at work ! I have access to a fridge but it is shared among others as well..! I m not sure if it okay to keep it there! Also I intend to send the milk to the daycare the next day ! Is that the norm? With my first child I never had to do all this and it is new to me ! First one was on formula most of the time