What does "after a friendly ship at range 1-2 executes a white manoeuvre" mean?

Does the friendly ship have to begin its move within range 1-2 to use

Kanan's ability, or just finish its move within range 1-2?

Or either?

Apologies if this is covered elsewhere or the question is stupid. Very new player...

Ignore. Found answer ( kinda) on the rules question board - where I should have looked in first place!

Sorry.

For anyone that's interested, I think that this is the thread with the answer that was just mentioned.