Im confused.

I see people installing crimped wire foundation and using pins.

I see people installing foundation without wires and then embedding wires horizontally.

Is it possible to embed crosswires with crimped wire foundation or is this not done or necessary?

Really confused here. How is crimped wire foundation meant to be installed? I used it but it also came with pins for the edges, however, one site im ordering from doesnt look like they offer pins, so is crimped wire foundation not supposed to have pins either?