Xtar vp2 charger question

I got this charger in a group buy with Chinese instructions and have 2 questions.
It has 3 settings 0.25 0.50 and 1.0A. Which one should I use to charge my 18650.
Also, it has 3.2v 3.6v and 3.8v. Which of these do I use?


Thanks. That’s exactly what I needed.