The icon library in VT PRO gives you many ways to customize your tour with different icons for different hotspots for instance. However, while customizing the hotspots down to each individual spot by creating them individually, it sometimes comes in handy to be able to replace all hotspot icons with a different or updated design of the current icon. Instead of having to do that for each and every individual hotspot in your virtual tour, you can proceed as follows: 

How to change a hotspot icon centrally so that each hotspot is updated.

Click on the orange icon when you select the HS that you want to change and when the library shows, just select the new icon and check the option  "Apply to all same hotspots".