Decompiler is able to point to find cross references to particular function of variable in the following way:
In the bottom part of the progam you can see Search panel
At the top right of this panel you can observe Options, next to it there is "All the above" button, if you select it you can narrow the scope of search
Select function / variable depending on what you want to analyze
Doubleclick on the search result in order to see the code
Right click on the function in code
Results should come up in Analyzer tab at the bottom of the screen (you can access the found function in code by Right Click > Go To Reference
