Watch the Preparing Pivots online guitar lesson by Brad Carlton from Chord Studies: Beginner Chords Vol. 2
This is a great sounding progression in the key of A. Between the Aadd9 and the C♯m7 your first and third fingers will be pivot fingers. When moving on to the third chord, your third finger will be a pivot and your second finger will come down and be a prepared pivot for the next chord. Then finally, when reaching that Dadd9 your second finger will be your pivot.