If you use the same roku account on each by using the same email, it will load the same channels on each. But you would have to put in the order yourself to match the first roku home screen, and sign in each channel separately again. No getting around this sorry.
Edmund
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.