Hi,
You can’t use a bridge as satellite to increase the max number of zigbee devices; the limit is defined by the zigbee controller, Homey Pro.
The bridge only acts as zigbee router, like any €5 zigbee lamp does.
Let’s start with which Homey Pro model you’re using.
Is it a Pro or a Homey Cloud you’d like to configure? I’m confused.
The 2016-2019 models can’t connect a bridge as satellite at all
That’s not OK.
A (Pro) 2016-2019 can handle up to 15 direct zigbee devices, and you can then expand the mesh up to 35 - 40 devices. Some have even reported 70 zigbee devices with this model.
A Pro 2023 and newer should be capable to connect 100 or more zigbee devices.
To tune the 2.4GHz wifi and zigbee channels, and to solve common zigbee issues:
AFAIK this only allows selected zigbee devices. It’s not a generic zigbee controller like Homey tries to be.