A finance mgr is not a lawyer, so I don't think it is 法令. It may be that 法例業務 was originally a literal EJ translation of "setting a legal example" that is now getting reverse-translated, but I think a safe approach would be "managerial responsibilities and duties related to laws, regulations, and company protocols"--something that emphasis the managerial responsibilities related to legal/compliance matters, rather than the legal matters themselves.

A finance mgr is usually responsible for making sure subordinates uphold all laws, regulations, and company procedures and monitoring their activities, reporting suspected violations to legal/compliance dep't, communicating with the legal/compliance dep't to stay on top of changes in laws and regulations and compliance procedures, circulating memos from and assuring attendance at compliance/legal dep't workshops, etc etc etc. I believe they can even be held accountable for a subordinate's actions if they *should* have caught them.