In KISSsoft, you can see the contact analysis of double helical gears by accessing the relevant software features or tools specifically designed for this purpose. The exact steps may vary depending on the version of KISSsoft you are using, but typically you would need to model the gear system accurately, specify the gear parameters, and then run the contact analysis module to obtain the desired results. Please refer to the user manual or documentation of KISSsoft for detailed instructions on how to perform a contact analysis for double helical gears.