a cfii cannot give instrument in a multi. You have to do single engine ils approach to have a instrument rating added to a multi certificate. The CFII cant instruct single engine approaches in a multi engine airplane.
Like I said in the previous post: "To give ME dual, you need CFI ME and 5 hours in make and model. It probably wouldn't hurt to have the 5 hours in make and model to give inst dual, and the trainee should be ME rated."
Perhaps I should have said "..the trainee MUST be ME rated."