TV + home theater + decoder + ps4 how to connect and set to sound on all sources

As in the topic of how to set up such a set of devices so that the sound on all sources comes from home theater? Tv Samsung j6370 cinema Samsung ht-5500, ps4, polsatu hd 7000 decoder

In the cinema you have two HDMI inputs and one optical. So you can safely connect the decoder and ps4 to HDMI in to KD and HDMI out to TV. If you want to have TV sound from the KD, you connect the TV with an optical cable to the audio digital IN.

Everything is described in the instructions.

Where are these entrances? There is 1hdmi and 1 optician, if there were 2, I would not write

Added after 3 [minutes]:

The manual you attached is for the HT-E5500 model and I have the HT-H5500 model

There are 2 HDMI inputs in the manual, I don't have this KD so I rely on the manual. If, however, it is as you write, you only have to connect the decoder optically with KD (audio only) and additionally HDMI with TV.

From what I can see the cinema has one HDMI socket (output) and an optical audio signal input.

My connection suggestion:
- connect all devices to the TV using the HDMI connections

To get sound from the TV and devices connected to it, a colleague has two ways:

A - use ARC - in this case, the HDMI cable between the TV and the cinema must meet the requirements of HDMI 1.4a
or
B - use the optical connection between the TV and the cinema.

In both cases, some changes to the TV and cinema settings are necessary.
The instructions describe it nicely.