Chord Am played with the right hand is played with finger pattern one like all other chords played with the right hand. Fingers are numbered 1 for the thumb, 2 for the pointer finger and through to 5 for the little finger. Chord Am is played with fingers 1, 2, 4, 5 on key notes a, c, e and g.
To move from high chord F down to chord AM, cross the fifth finger over to note e then form AM.
To move from any other chord to any other with the right hand, cross the thumb over to the root note of the second chord.