Huddle is designed with caregivers like you in mind.
First, you can create a profile for each person you take care of. Simply tap on the circular avatar icon in the top right to get to the list of all profiles you have access to. Create as many as you'd like, for all those you take care of.
Second, invite any other caregivers. Your partner, sibling, or even an emergency contact. They will be invited to download Huddle, and after setting up their own account, they'll be able to see the profile you've invited them to. You can even invite them to multiple profiles, if you both care for multiple people. To do this, go to the "Manage" button next to a profile. Then you'll see a "Care Team" section where you can invite them by phone number or email.