A Multi Combination Vehicle is a:
Multi Combination Road Ranger Manual
The amount of training will depend a number of factors:
An experienced HC Unrestricted Driver would be expected to complete the training in a day.
An experienced HR Unrestricted Diver would be expected to complete an complete the training in two days.
If you have no, or minimal experience with a Road Ranger gearbox there will be additional training prior to commencing the MC course. This includes people with a Condition A or B licence.