Moca Setup - Time Warner Internet

This question is about "Moca Setup", with Time Warner Cable internet and apps. I have Spectrum Internet and cable TV. Spectrum installed a splitter at the 'home panel' with one connected line providing internet to my office and another line providing the TV feed to my cable box.

What I wish to do is install a moca adapter in the panel so I can add wired internet access to the TV location. I assume I will need to move my cable modem to the panel box, and install a moca adapter in the panel box, and at each location (office, TV room).

Is this correct, and do I connect the moca before the splitter?

Moca Setup?