How work exactly the ''mass order'' function for warships and units ?

[BaronNoir]

I do find it on the build interface, I don't find how to tell the game ''use this and this provinces''.

 

[IIWW]

It uses the best possible provinces, don't know how exatly it chooses, but I think it's simple "build time+travel time". You choose province where the fleet/army should gather, the rest is automatised.

 

[Junuxx]

It uses the best possible provinces, don't know how exatly it chooses, but I think it's simple "build time+travel time".

And build cost, I assume.

 

[IIWW]

And build cost, I assume.

Oh, right, the build cost. Yes, it should. I don't know the exact formula for it.

 

[henzington]

Just a note the provinces have to be continuous or they won't be used. I had issues with this as France, Prussia, and Russia where only a few provinces would be used and others which were usable but separated by provinces owned by another country weren't used.