Software recommendations for projector titles/slides and simple visual effects at an event
You can do this in either Keynote or Powerpoint by building a simple menu system in a master slide. Simplest is to build a menu slide that will hold all the content you want to target and jump to. Then make a link back to this main menu slide on the master of all your slides. You can make it visible or quite small. Your choice. 

In Keynote the main menu slide is done via Insert > Text Hyperlink.
In Powerpoint you have far greater capability with macros, but can easily jump to a slide in the same way. 

I believe macros can be linked to text or graphics (button) where with Keynote, it's a text link.