Manage Shared with You settings on Apple devices
When someone shares content with you from the Music, Apple TV, News, Photos, Podcasts and Safari apps, Shared with You can automatically organise it into a Shared with You section for easy access. Content that’s shared with you in the Messages app is automatically organised in a Shared with You section in the Music, Apple TV, News, Photos, Podcasts and Safari apps.
Find out how: To view a task below, select the plus button 
next to its title.
Manage by person on iPhone or iPad
If there’s content shared with you through Messages that you don’t want to appear in associated apps, you can turn off this feature by person.
Tap Messages
on your iPhone or iPad, then tap the conversation whose content you don’t want to share across apps.When the thread opens, tap the person’s name at the top.
Turn off Show in Shared with You, then tap Done.
To learn more, see:
Use Messages to receive and share content with friends in the iPhone User Guide
Use Messages to receive and share content with friends in the iPad User Guide
Manage by person on Mac
If there’s content shared with you through Messages that you don’t want to appear in associated apps, you can turn off this feature by person.
Open the Messages app
on your Mac, then select the conversation.Click
in the top-right corner of a conversation, then deselect Show in Shared with You to remove shared content from the Shared with You section.When Shared with You is turned off, you can still pin shared content to show it in the corresponding app.
To learn more, see:
Keep track of shared content in Messages on Mac in the Mac User Guide
Manage by app on iPhone or iPad
If you want to turn Shared with You on or off within the Music, Apple TV, News, Photos, Podcasts or Safari apps, you can adjust your settings.
On your iPhone or iPad, go to Settings
> Messages > Shared with You, then turn off Automatic Sharing or turn off Shared with You for a specific app.
Manage by app on Mac
If you want to turn Shared with You on or off within the Music, Apple TV, News, Photos, Podcasts or Safari apps, you can adjust your settings.
Open the Messages app
on your Mac.Choose Messages > Settings or Preferences.
Click Shared with You, then do one of the following:
To turn off all apps: Click Turn Off.
To turn off selected apps: Deselect apps.
To learn more, see:
Keep track of shared content in Messages on Mac in the Mac User Guide