Dangerous Goods training has evolved from traditional learning to competency-based training and assessment (CBTA) as agreed by ICAO.
In IATA's new 'Dangerous Goods Training Guidance' as referenced in IATA's DGR - section 1.5:
Categories 12 have transitioned to function 7.10 | Screening of Passengers and Crew and their Baggage, Cargo and Mail
To be determined after conducting needs assessment
Security personnel
To help the security services staff understand what substances and articles constitute dangerous goods and the limitations applicable to the transport of dangerous goods by air