You can use your existing Quick Keys with your new Pen Display 24. 

You can connect up to two Quick Keys to your Pen Display using one wireless dongle. This will double your ability to set up custom settings for your applications. 

The Settings panel will allow you to rename the Quick Keys so that you can uniquely identify them.  

You can connect two Quick Keys to one wireless dongle.

Once you have them connected, you can then give them unique names, making it easier to work with them in the Settings panel.