Depends on the facility! If you know where you are wanting to work, call them and discuss your options and what would make you a qualified candidate.
Responsible for providing assistance with ADLs (activities of daily living) and homemaking to clients with intellectual developmental disabilities. Assisted with meal preparation, personal outings, changing soiled linens, oral care, bathing/showering residents, skin care, dressing, exercise assistance, feeding, laundry, and activities outlined in the care plan for growth and development. Assisted other DSA’s with crisis prevention/management if necessary. Accountable for implementing the service and care plan that is designed for a particular client. Observed, recorded and reported all changes in behavior or health status to supervisor.
That is what I put on my on my resume that covers the CNA duties I provided. We were trained as Medtechs, which is something you mention in your post. Again, I would call around and see if they provide paid training on this (if they do, that's your best option.)
You do bond with these clients, you learn their stories and see them basically 5 days a week. They become such a huge part of your life, so be prepared to handle that emotionally. It can be a bit more intimate than working at a large long-term facility, and you will find that some companies are more concerned than others with the clients!
I wish you the best of luck!