please see below to adding your trainer.
Navigate to and open Samsung Health, and then tap the Together tab. Tap Friends, and then tap More Options on the Friends screen. Tap Invite friends and then tap Share. From there, you can send the link to them through text or social media.
please let me know if this help and select solution if your questions have been solved.
I would recommend reaching out to our Samsung Health team directly at 855-795-0509 for further assistance.
Be sure to click " ✓ Accept as Solution" when you find an answer that works for you.
Please note, notification emails are a DO NOT REPLY address, you must log-in on the community page in order to respond.