You may have heard of a mental health or substance misuse liaison. This person tends to be an advocate for a whole agency in connection to a specific treatment center or a network of agencies and to form stronger community partnerships between the two entities. This may include a probation liaison, school liaison, hospital/inpatient liaison, or Child Protective Services liaison.
Churches may also want to consider getting a mental health liaison (or honestly, a counseling agency hiring their own). Below, Cath from KeyMinistry.org gives a great presentation on what a church mental health liaison would do and you can get the PowerPoint PDF for it here and their is a second part here.