I have some sub-tags that are grouped under another broader tag. I can apply two tags at once by clicking on the sub-tag in the tree, but I haven’t found a way to do it with a keyboard command.
My example is I have a tag hierarchy Cats > Kaylee. I can click on Kaylee and get Cats too, but if I create a keyboard shortcut for Kaylee I only get Kaylee and have to apply Cats separately.