Hello everyone!
I'm a newbie and need some help. In campaign 2, I can't figure out how to leave the psychomart in the tree. Gaia says to leave the creature by right-clicking it and pressing a button. How is this done? Where should I right-click? I've tried everything, and I feel like I'm missing something obvious. Please explain. If possible, with screenshots. "Leave guard" doesn't work.

When you approach the tree, click on it, and after the dialogue, a green box will appear to the left of the tree. Hover your mouse cursor over it and right-click – a menu will appear with the option "Leave Guard," where you can move the mart from your army. This is how it's done when troops are transferred to a garrison (drag the mart into an empty garrison slot and click the checkmark) – the mart will appear in the green box, and after the turn ends (click on the hourglass in the menu), the quest will be considered completed, and the wizard will move the hero across the river.