System editor... Making a moon orbit a planet

Hi there... in the system editor how do you make a moon orbit a planet? When I add a new body it seems the only option is for it to orbit the sun?

i think the moon should be smaller and/or lighter than the planet ... otherwise it orbits the sun

and the orbit cant be so big that for example the sun is between planet and moon

Try modifying the mass. That way you can have moons that orbits moons that orbit moons that ...

OK I will have a look at the mass.

It has to have suffiencet mass and the planet orbititng it can't have to much.

I've had a planet orbiting another planet.. which had a planet orbiting that one with a moon oribiting that one... .. I got orbit happy.

like i said