This could be really useful for you. Just take a look how could it help you.
- Go to the ribbon to the Insert tab.
- Click Shapes. Action Buttons are the last here. Click the last one what is Custom.
- New dialog windows appear. There are plenty useful options to use.
- You can add hyperlink to other document or to website and keep it inside your slide. It could be useful in case some questions.
- The same way you could Run program, Run macro or Play sound.