according to the rules
If a feature is completed during the subsequent course of play, then before the calculation of the majority, all players may
redeploy their followers from the appropriate city quarter to the feature being scored7 - with the exception of those followers in the
same city quarter as the count).
Later it is described how it is precisely done:
The player to the left of the one who placed the last tile begins, followed in turn by the other players. The player who placed
the last tile may redeploy their followers last. Each player may choose to redeploy all, any or none of his or her followers
from the appropriate city quarter to the feature being scored. Then scoring continues as usual
But How do we do it when 2 or more features are completed during play?
Do we still use the above procedure but the with slight adjustment that "Each player may choose to redeploy all, any or none of his or her followers
from the appropriate city quarter(s) to the feature(s) being scored"
an alternative would be to follow the last procedure for EVERY feature...
In any case: the rules are not cleart about this.