BOTH*
*kinda
That tag has been used for quite a few questions.
Here's the page:
Recent questions tagged helping-hand
It looks like about fifteen of them are in reference to the move, while the remaining six are for assistance.
Most likely, the tag was originally created for the move Helping Hand, but if you feel a tag fits your question, why not use it? Tags are just for organizing questions, and there aren't super-strict rules governing them.
Authority with the right permission can just re-tag it, anyway.