Datblygwyd y dull Rheoli Achosion Uwch gan Lywodraeth Cymru, y Bwrdd Cyfiawnder Ieuenctid, Timau Troseddwyr Ifanc a Gwasanaeth Triniaeth ac Ymgynghori Fforensig y Glasoed Cymru Gyfan. Mae'r dull wedi'i seilio ar baru ymyrraeth a chymorth gydag ymddygiadau ac anghenion sylfaenol pobl ifanc sy'n troseddu.
The Enhanced Case Management has been developed by the Welsh Government, Youth Justice Board, Youth Offending Teams and the All Wales Forensic Adolescent Consultation and Treatment Service and is based on matching intervention and support to the behaviours and to underlying needs of young people who offend.