Using tags you can limit media that belong to the same playlist to play on specific screens only as in the below example.
Playlist 1 has multiple media with multiple tags, and is published to 3 screens where Screen 1 has the tag “office1”, screen 2 has the tag “office 2” and screen 3 without tags
Each screen will play all media that have matching tags or media without tags as below diagram:

To set up media and screen tags follow the below steps
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Open playlist media settings (open a playlist > choose layer > click edit on a media)

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Add one or more tags
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Enable “Tags playback restriction”

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Go to the screens page and open screen tags ( screens > click on orange cog > Tags )

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Enter one or more tags. Media with matching tags will be displayed on this screen.

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Click “Publish” Media with matching tags will be sent to the screen