@Alex29
By "linking" your Roku devices to the same Roku account (same email address) during setup and activation, all your channels and subscriptions are shared amongst the linked devices.
You will still have to arrange the channels/apps on the home screen of each device seperately and generally have to login to the subscriptions/channels/apps on a per device action also initially.
Once linked to the Roku account, removing or adding a channel/app from one Roku device will add or remove that channel/app from all linked Roku devices.
https://support.roku.com/article/235180868 (How to activate or link your Roku streaming device)
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Individual settings and preferences (ie. home screen layout, closed captions, audio/video settings, etc) are device based, while subscriptions/channels/apps are account-based.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
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