@Doobie01
When Roku devices (or RokuTVs) are linked to same account (email address), whatever channel/app is added or removed from one, is added or removed from all the linked devices.
By linking devices to same account, you can share any premium subscriptions among the linked devices.
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If you want a completely seperate account, (no shared subscriptions), then you can factory reset one of the devices/RokuTVs and set it up under a different account (different email address).
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102