The Department of Human Services director and board must conduct or approve an in-service training program in the detection and investigation of all forms of human trafficking, including, but not limited to, “involuntary servitude” under subsection (b) of section 10-9 of the Criminal Code of 2012, “involuntary sexual servitude of a minor” under subsection (c) of section 10-9 of the Criminal Code of 2012, and “trafficking in persons” under subsection (d) of section 10-9 of the Criminal Code of 2012.