How do I access 1PW 8 betas

I have always been about to get 1PW (and prior) betas, but I see no place to turn that on in 1PW 8.0; where do I turn that on, or how do I access them when they come out.

1Password Version: 8.0
Extension Version: Not Provided
OS Version: macOS 12.5.1
Browser:_ Safari
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