For Caregiver selection allow users to select only certain Caregiver roles (for scheduling)

For Caregiver selection allow users to select only certain Caregiver roles (for scheduling)

Under Caregivers rather than selecting all or individual caregivers we've created different caregivers roles. I'd like to be able to select from that group under the role or at least group them under their roles rather than have to go through and individually select each individual by their name. 

Examples:

caregiver 

  - Testing, Marcus

PRN

- Testing, Sarah

- TestPRN, Marcus

Currently to get those two I have to select them individually not just by their role type.