That path is to set the units for Simulation.
If that's what you want then it should be on the first pace when Simulation starts up.
If you want the general settings though then you will need to go to "Tools/Options/Document properties"
Butter still, type "options" into the search box - top right of your screen.
Set the pop down menu to Command and this will give you a list.
Thanks for your help. It is sorted.