I have just discovered the tree and there's something I need to do with it but I dont know if its possible. I want my tree items to be say, hours in a day and if someone is available in that hour i want them to click on that column so it turns for example blue. My question is this: instead of having checkboxes at the treeitem level can I have an uncoloured shape of which I would toggle the color when it's clicked on?

it has to act as a sort of scheduling system for different people.

Thanks for the help.