I need to vary the walking speed of my worker. For example, i want to lower the speed when the worker is carrying a load with pallet jack. I can do this using user defined attributes but I wanted to know if any default plant sim feature is available. Also i want to post a "Not so relevant" question here.. Where can I find the standard walking speed so that I can use it in my model. Meaning where do I find standard walking speed (like ILO) to achieve more accurate results?