Other army's planes absent?

[Chief WH]

Hi,

I'm trying to create a mission (offline) from scratch, so not by modifying an existing one.

I load the map, England 1940, set the battle area, weather etc. I can create the flight with a player controlled plane, set waypoints etc. and this runs fine when tested

What is causing a problem is the other side's planes are not showing. I can set waypoints and other settings but they simply don't show up. I'm sure I'm missing a simple setting somewhere, but can't seem to find it?

Any ideas what I've missed? Are there any golden rules to make sure planes appear (must have landing points, or take off, certain speeds/altitudes?)?

Rather frustratingly I did manage to get it working one time, but then changed something and can't get it back!

Thanks,

Chief WH