Hi Clara! It is really quite easy to find the entertainment times if you know where to go and often guests don't know they are just one click from this information!
On the main Disney website you will need to go to the individual parks main page. You will see CALENDAR on the left side of the page and click on that. When the calendar shows on the page set it for the month of your visit. Then simply click on each day to see the entertainment times...shows, parades, etc. Please click
HERE to get to the Animal Kingdom calendar page.
The Hollywood Studios calendars do not list the Beauty and The Beast show times and they can change so please be sure to pick up the park Times Guide as you enter for the day. In the past they have had show times at 11:30, 12:45, 2:00, 4:00, and 5:45pm. This hopefully will at least give you an idea of how to plan this show into your itinerary.