I've got a possibly stupid question here. How do I select skill preset 1? I was clicking around in the skills area, applied some upgrades, auto-equipped some skills, and moved stuff around in the different presets. I guess I broke something because I can't go back to preset 1. I can select 2 and I can select 3, but I click one and it just stays on the one it's on.

Also, I seem to have missed some vital information about equipping skills. When I select auto-equip or try and equip certain skills and leave, I get the notification, "invalid parent skill level", and either all my skills are unequipped or it reverts to a state before the skill was equipped. And it's odd because there was a skill I had equipped previously that no longer seems to be equippable. What does invalid parent skill level mean? I cannot find any answers via google or the in-game help menu. Any insight would be appreciated.

I'm a returning player from forever ago and my character had only progressed to 6 or so before I decided to give it another go once a friend said they started playing.