I want to increase the inter-vehicle friction between two vehicles colliding with each other in my EDSMAC4 event. I used to find this in the Calculation Options for the event, but I don not see it listed there. Where do I make the adjustment?

If you are using EDSMAC for a crash simulation, the adjustment for Inter-vehicle Friction is located by selecting Options, Calculation Options on the main menu.  You will clearly find the adjustment of Inter-vehicle Friction in the Calculation Options dialog.

If you are using EDSMAC4 or SIMON/DyMESH, the adjustment for Inter-vehicle Friction is found by first selecting a vehicle, then selecting Set-up, Vehicle Mesh.  The third section of the Vehicle Mesh Options dialog allows the user to assign the Inter-Vehicle Friction value between the current vehicle and other vehicles in the simulation.