Is there a way to use skills if they are not on hotbar?

I have 20 memorized skills slots (items and innate skill included), but only 18 slots in my hotbar (I'm playing on a 4/3 monitor on 1280x1024).
When I select the 19th skill it doesn't add to one of the other hotbars so I feel I wasted 1 talent point by chosing menmonic, because I can't use more than 18 anyway.

There are more hotbars, you can scroll past the 1st hotbar.

Also note that some later/stronger skills take more than one memory bar, so you will eventually end up cutting down the actual # of skills.

as I said, when I click on the skill it doesn't add to any skillbar.
also, for example, when I put on the shapeshifter mask on Fane, if I don't have free slots on hotbar #1 I can't change face because the skills don't appear anywhere.




edit
Solved! (sort of)
I can drag and drop skills to hotbars 2-5, it's as simple as that.
It was one of the first thing I tried, but somehow only managed to unmemorize skills.. now I feel an idiot.

Still, it's a weird bug that bars 2-5 don't autofill. Does it happen only to me?
It's annoying since bar 1 is constantly full because any item you pick up is added to it.

Honestly the autofill "feature" is more of a bug to begin with...I literally don't need arrows/potions/etc that my physical warrior will never use filling up the toolbar simply because he's my bag man...

But yes that's what I meant, you drag/drop skills into the slot you want, didn't realize clicking them even added them to bar 1.