Each charger should have its own three-phase, 32A supply cable.
The charger cable(s) should be solidly connected to the supply cable at the base of the post.
Different posts have different connection arrangements.
Zaptec Onepole posts use a terminal kit (part number Q13YF), which is sufficient for 2x charger cables and 2x supply cables
EV Tower posts have space for a 2-gang modular enclosure