Switchboard requirements for 3 phase charger

Hi,
I’m in the process of redesigning my switchboard as it’s an overflowing mess due to additions of heatpumps, submains, and a 3 phase solar system. Future planning will include an Evnex 3 phase charger install. How many slots on the board should I allow for? And should I make space for CT clamps etc?
Thanks,
Paul.

All good. Should have RTFM before posting. Found the answer in the docs.