How can I install Truck Simulator Plugin?

Hello community, I installed an ETS2 dashboard in the Simhub. I am connected to my iPad. Now a message appears I want to install the TruckSimulator plugin, the link can be found in the usergide. Unfortunately, I can't find anything in the user guide on how to do it. where is the plugin to install? and how to do it. I'm brand new to this topic and need to find my way around Sihub first. Can someone help me? please give answers for stupid ones. Thank you Michael. i use google translate.