How can I invite my friends to play without giving them edit permissions?

I’d like to play test my game with a few friends and possible some others, but Fortnite won’t allow me. If I invite them to my team, that would require giving them editing permissions, which I don’t want to do. If I invite them to play on my Xbox via a private island code, it doesn’t let them join. Epic, can you please consider either adding a “playtester” team role, or just allow my friends to join private island codes? Making multiplayer games is difficult when you cannot test with other players.

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