What can be an example how a leader versus manager would respond to the following situation?

A human services agency was founded in 1986 to provide counseling and treatment services to adults struggling with substance use. Over the last several years, there has been a drastic spike in the number of individuals, ages 12-17, that are actively using substances in the region; specifically, heroin and fentanyl. In addition to published research and data that shows evidence of this growing community need, staff at the agency are also sharing the high number of calls received by staff for parents advocating for minors that are seeking drug treatment.

I hope someone can give an example of each so i can further understand.