There is nothing to do differently when booking Concierge.
You do need to be aware that concierge deposits are non-refundable— you can change to a different cruise or downgrade to a non-Concierge room, but you cannot get a refund.
A few days before their onboard booking window opens, Concierge guests will be contacted by Shoreside Concierge about booking onboard activities. Once they are paid in full, they can then send an e-mail with their requests rather than logging into the website when booking opens.
Everything else with booking is the same as for non-Concierge.