TVheadend setup on Synology with Triax TSS 400

Dear all,

I have just installed Tvheadend 4.1-Testing on my Synology station. It finds my my Triax TSS 400 (see attachment), but I really do not understand how to configure it. The plan is to make it available to some Kodi instances on other network devices.

Can you help me with some basic information? I really do not get it.