FusionHub routing

Hi all!

I’m facing a routing issue when using a FusionHub router.
My setup is as follows:
FusionHub has 192.168.10.1 as an ip address. This is an address acquired from a IPSec server at 192.168.10.2. This allows me to reach IOT sim cards in the 10.1.236.0/22 range.
I have a BR2 MAX which holds 2 of these sims, there is a SpeedFusion tunnel between the FusionHub and the FusionHub. The BR2 MAX has IP address 192.168.12.61.

How would I need to configure the FusionHub to be able to reach a SIM card in the 10.1.236.0/22 range from the BR2 MAX? Since I can ping both 192.168.12.61 and 10.1.236.14 (the SIM I’m using for testing), my guess is this should be feasible.