The best way to get the data you’d like into Dexterit-E is to use the “analog inputs” input on the DataLogging block. Looking at your model, I’d suggest against any customization in the DataLogging or GUI Control blocks. Customizing those blocks makes upgrading to new versions of Dexterit-E much harder as those blocks dictate how Dexterit-E interacts with your model.

In order to add the extra channels you’d like you should:

Add all of the extra channels you want to gather to the mux going into the “analog inputs” input on the DataLogging block
Edit your protocol in Dexterit-E to name and save all of the extra inputs you have added.