Object longer modification

 From:  Lara (MALA)
10610.1 
Hi,
I need to make an object longer.
Without loosing my construction.
How can I make the red longer in order to reach the green objekt. Without loosing the bottom wholes of the red one?
In c4d it is clear to me. Not here. Tried it selecting geometry points...hmmmm´...it is not an option, I guess.
Thx. Best Mala...