Is there a way to set your campaign to not allow the player to open one another's character sheets?

Character sheets can be set to private. The players will still be able to see name, race, class, and level in the campaign overview, but only DM and owner can open the sheet.

I am unable to test it, but the players do have the option to make their characters private and I think the DM can still see everything.

Even when characters are set to public, players can't see other player's description and note tabs.

Does that help?

Thank you.