Post EPS installation tasks?

I have HY3.6 inverter and 8.2kWh battery and my local electrician has just installed a TT earth point and the EPS socket (Givenergy method 1). The electrician completed the Givenergy installers course and the original system installers are OK with the local electrician doing the work. So everything is above board and done properly.
Is there anything else that needs to be done system wise (configuration? Setup?) now that there is an EPS in the mix?

Givenergy support have said:-
This would need to be recommissioned and declared that EPS has been enabled on the system.
I would also make sure that the installer hasn't connect this EPS socket to the main board in any way so as to not backfeed when going from off grid to on grid.