What are the mechanics of buying new issue treasury bonds?

I'd like to buy some 20-yr treasury bonds when they are issued on 10/20/2023 (new issue!). I found where these will be show on Fidelity (in the 'new issues' section). My 3 questions are:

1. When the treasury starts the auction, will I be able to immediately purchase these on Fidelity?
2. Do these new issues tend to go really fast? How do I know what time of day to log-in to buy them? If' I'm a minute late, will I miss my chance?
3. Do new issues typically sell at $1000 increments? Whats the minimum purchase typically?

​