For those with no formal instruction, occasional workshops and instructor-led seminars can supplement and enhance their self-taught or on-the-job training.
Maka ndị na-enweghị ntụziaka, ntụle oge ụfọdụ na ọmụmụ ihe na-eduziri ndị nkụzi nwere ike ịgbakwunye na ịkwalite ọzụzụ onwe ha ma ọ bụ na-arụ ọrụ.