The help system (F1) has info on both block and tag creation. You can create a tag first and incorporate it into the block. I am sure there are videos available online that may show this, in places such as um Ou-Yay Ube-Tay.
If by some odd chance my nattering was useful -- that's great, glad to help. But if it actually solved your issue, then please mark my solution as accepted 🙂
