Question on Meditate on Green

[Sorcor]

Before posting this I read the Wiki to try to be sure I understand

Short Answer - I Don't

I last Played on Blue - And Kunark was out so we were several patches in

And I really can't remember much from 20 years ago (plus I played a lot of Bard / Warrior back then)

So...

My Cleric hits level 8 - I train the Med skill

The skill is not going up when I sit, which I didn't expect

But

I can't seem to create button to start the skill (and open the spellbook like the old days). Which I thought I needed to do - Nor is there a button when I open the spell book manually

So I don't know how to get it started It seems

any help is appreciated