Task queueing?

Task queueing?

Hi!

I was wondering if there is a way to queue tasks in sequence. In other words - can I create tasks in such a way that task 2 cannot begin until task 1 is completed, and thus keeps getting pushed down the calendar without me having to do so manually? This is very important to me, so any help is appreciated. If I have not explained my query clearly please let me know.

Thanks in advance!
Andrey