I'm confused. Sometimes it says "sign" and other times "approve". Also, the way it's worded it seems that a SM can deny approval for any reason. If it's an approval, when would you NOT sign the card? Unqualified counselor? Scout too young or small? Scout has too many MBs outstanding? Unit expectations? Other?GTA section 22.214.171.124 says: "Though a few merit badges may have certain restrictions; short of them, any registered Scout may work on any of them at any time, as long as he has the approval of his unit leader."
Is there more that guides the SM as to when to "approve" starting a MB?