Note that it's really not recommended to run static IP on APs; all is designed with DHCP for zero touch provisioning and if you ever want to move APs to another subnet, with DHCP that is a easy job, with static you probably need to touch every AP.
But having said that, IF you REALLY want to configure static IP for the AP with New Central, go in the configuration hierarchy to the device where you want to configure the static IP, then create a Local Profile, where you can switch from DHCP to Static:

------------------------------
Herman Robers
------------------------
If you have urgent issues, always contact your HPE Aruba Networking partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact HPE Aruba Networking TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or HPE Aruba Networking.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
------------------------------