In the first, you should communicate with them both and scheduled the training plan got to a common view. Second, if you can successfully complete the step shown above, then carry out it according to plan behind fully communicated. If failed or not better executed than originally minded, making a compulsory planning order them, included time fixed, people amount present at training etc.
The practical plan should be directed by resource organizing, integrating and leading. In beginning you adopted with communicated way is viable, otherwise displaced your power right is also a good way to resolve these problems resulting from ex-core.