Static IP Address Not working on Satellites

I was wondering why it is impossible to set static IP-addresses on the satellites.
For the router, by me in AP mode, it is perfectly possible, but for the 4 satellites not.

Each satellite takes an address from the DHCP-range.

I checked the last user documentation for firmware V4.6.14.3 and it looks like you can't set a  static IP somewhere. It says... You can change the satellite’s model and name that display on the Attached Devices page.   But NOT change / set the IP to a static one.

Ref.  RBK852_UM_EN  page 105-106   (November 2022 / 202-12600-02)

We have here an RBK852 Router with 4 RBS850 Satellites

Is it possible to get this feature in future firmware versions for router / satellites ???

Thanks,
Jochen