This is taken from the Canadian Forces Dress Manual
A-AD-265-000/AG-001
APPENDIX 1, ANNEX C CH2-003-02-13
3. Army master
occupational
badges
a. Jacket, service
dress
(1) Worn by WO, MWO and CWO, centred on the right sleeve,
1 cm (3/8 in.) down from the lower edge of the rank badge
to the uppermost point of the master occupational badge.
Sergeants and below, if qualified, will wear as for
occupation badges.
I hope this puts to rest the fact that yes indeed there is indeed a regulation that covers the wearing of Master Occupational Badges.
Mike Timoshyk in Windsor Ontario