Where to find settings like "mixed precision fp16", "Optimizer 8bit Adam", Sampler etc?

[AlexxB31]

Hello,
I installed successfully, but I am missing some settings, which were in other DreamBooth tutorials:
Where can I set sampling method, mixed precision and Optimizer?

I'm getting error: "No executable batch size found, reached zero."
I read that I should try such different settings then.

Thanks for help