[Zarix]

First you have to have at least one drone/satellite/mine in planets cargo. Then you can give orders to launch it to the planet. When you have done that the repeat order button lights up and you can click it. This is the way to do it in simultaneous game. I don't know how to do it in turn-based.

Upgrade facilities button is in construction queues window (F7) the second button from the bottom.