You have several choices in the style of bath screens you can install into your bathroom. You can get sliding screens or screens that pivot. With the ones that slide you can create an entrance to the tub that is larger or smaller to accommodate the person getting in or out of the bath. These pieces are excellent when you need to place children or pets in the tub.
When you have children or pets in the bath you generally have to be kneeling beside the tub so that you can assist them with their bath. You will e able to do this and able to keep them from splashing water out of the other portion of the tub. When you have pets the portion of the screen that remains closed will keep them from escaping while you are trying to give them a bath.