Pentagrams and Hexagrams, invoking and banishing?? Options

I'm not quite sure if I fully grasp this whole pentagram and hexagram thing yet. so I'm going to post what I think is going on and then leave it open for corrections.

There's a banishing and invoking varient of the pentagram and hexagram for each element.
Now in raw assumption a banishing pentagram of fire would remove the presence of any energy of the element of fire? And likewise with other pentagrams? Or is it different than that.

And an invoking pentagram of fire would add the presence of the element's energy?

This is what's really puzzling me, the purposes of these. Aside from LBRP and LBRH which are well explained. But could someone give an example of uses and how one would might go about the use of these other pentagrams and hexagrams?

Thanks

I need to learn Hebrew... Fast....

And how come the only things you all do with pentagrams is banish and invoke? Isn't there anything else you can do with penta/hexagrams?