Objects in other objects how

i would like to know how to get 1 object in the other one ex:
i want to do a rollercoaster and i need to do a ramp up to do that i need to put 1 point in the other one and i cant do that :S plz help

No Collide in Tools?

oh tnx lol

What just happened?

oh lord

Nocolide, pretty basic tool.