D.C. Mun. Regs. tit. 17, r. 17-3721
A licensed barber instructor is permitted to practice as a barber and as a manager without obtaining separate barber and manager licenses.
A licensed barber manager is permitted to practice as a barber without obtaining a separate barber license.
A licensed cosmetology instructor is permitted to practice as an operator and as a manager without obtaining separate operator or manager licenses.
A licensed specialty cosmetology instructor is permitted to practice all disciplines within that specialty without obtaining any other professional specialty cosmetology license.
A licensed cosmetology manager is permitted to practice as a cosmetology operator without maintaining an operator's license.
A licensed specialty cosmetology manager is permitted to practice as a specialty cosmetology operator without maintaining a specialty cosmetology operator's license.
D.C. Mun. Regs. tit. 17, r. 17-3721