A newbie question - How to make a device, such as DY-HV20T music player module to use on the schematics.

I have been using a lot of these building block modules, that have come from China.

But there does not seem to be any such devices listed.

The closest I have come is a single channel 817 Optoisolator, and I want an 8 channel one.

Any guidance of how best to make a rectangular block with just say 32 solder pads.