P-tab question

Today was my first try with the Helix (and first time doing something like this in general.) I got it in, but it was fairly uncomfty, don't think I had enough lube and combined with the first time anything was stuck up there, my session was cut short and nothing happened... I wasn't surprised. It was a big step foward though.

I pretty much understand what to do, but I'm not getting the p-tab. Untill I started reading this forum I thought it was mearly there to keep the aneros from getting sucked up... an anchor. But from what I've read it's an important part of the experiance.

So my questions are...

1. Whats up with "positioning" it to find the sweet spot. I really don't see how you have much free way in moving this thing around.

2. What should you feel.

3. where is your sweet spot.