Guitar is a beginner. How do guitar play strings H and P?

String H is striking, you feel, after striking a string, quickly press your finger on the string, and then quickly press on the string and immediately leave, the sound changes. The hook P finger presses a string, and then pulls it down forcefully, without using the right hand to make the string sound. Questioning hooks means using your left hand to pronounce them, right? The answer is correct. How do you play the other up and down strings? Sometimes a chord will have the sign of plucking down the chord? Do you pluck the string with your thumb? More questioning