@David_Bovee, I suppose your MAX BR1 Pro is the 5G (or LTE CAT20) model? If that is the case, you can utilize the AP Controller function in the MAX BR1 Pro to manage the AP One AX Lite (wire connected to the MAX BR1 Pro) to simplify your Wi-Fi provisioning tasks(screen capture below). The AP One AX Lite serves as the extended “Wi-Fi antenna” of the MAX BR1 Pro with the network & radio settings managed by the MAX BR1 Pro.
Alternatively, if the AP One AX Lite needs to be wirelessly connected to the MAX BR1 Pro, you may refer to this “Howto” article that provide the guide on setting up the Mesh between a MAX router and AP.