How should I adjust the piano metronome timing buttons? As shown below.

Beat refers to the number of beats per bar, if it is 3 beats, choose 3, Tempo refers to the number of beats per minute, this can be based on the score and their own degree of practice, 60 is 60 beats per minute, which is equivalent to 1 beat per second, the bottom of the selection is a number of notes for the first beat, respectively, the 4th note, 2 eighth notes, 3 eighth notes, 4 sixteenth notes for the first beat. 3/4, then the B choice of 3, time 60, and the note picks the first 4th note