you score point an amount of points at a time.
es:
you place a tile that close a city of 2 tiles and a cloister... you should score a total of 13 VP but in reality are 4 VP (the city) and 9 VP (the cloister), so u can:
move first for the 4 with normal meeple, then for 9 with the messenger
move first for the 4 with the messenger, then for 9 with the normal meeple
move first for the 9 with normal meeple, then for 4 with the messenger
move first for the 9 with the messenger, then for 4 with normal meeple
move first for the 4 with normal meeple, then again for 9 with normal meeple
move first for the 4 wit the messenger, then again for 9 with the messenger
move first for the 9 with normal meeple, then again for 4 with normal meeple
move first for the 9 wit the messenger, then again for 4 with the messenger
...u are the one who decide wich point u can get first and wich follower move on the scoreboard!
obviously the choise depends by where are the blak points on the scoreboard...