Thought I'd better post the following, directly pulled from the state law. I wouldn't want anyone to get in trouble because of misinformation. You can only have one caregiver at a time and you have to apply with a change of caregiver request to the state to change your caregiver.

(6) (a) "Caregiver" means an individual, 18 years of age or older who has agreed to undertake responsibility for managing the well-being of a person with respect to the medical use of marijuana. A qualifying patient may have only one caregiver at any one time.
BroncoBill Reviewed by BroncoBill on . care give /dispenser Hi I m in the process of moving to montana and was wondering how to find patients to become a caregiver. I also wanted to know if clubs or dispensary are allowed in montana. And if any care givers would be interested in working with a dispensary. Rating: 5