Hi, @ROSEJOY
Thanks for posting here in the Roku Community.
We see that you've inquired about having different/separate users on the YouTube app. As much as we'd like to help, this seems like a channel build and design inquiry that the channel provider can assist further. Thus, we recommend reaching out to YouTube directly to be assessed further. Reach them at YouTube Support
We hope this will be sorted out soon.
All the best,
Kash
Takashi O.
Roku Community Moderator