its to get two or more skills that you can attain only at higher level as soon as possible.
e.g. you have skill a and b that you can only get at level 5 or higher. when you get 5 and have already spent all your points up till now you only can get a or b and have to wait another level for the second one.
i don't think this is such a complicated thing that with a bit thinking you couldn't get the point yourself. especially not if you looked on the skills they picked in the examples your question based on.