how do I add my family to my devices in find my iphone

Hi Bobsbigboy942,

Thank you for using Apple Support Communities. 

We see from your post that you have a question about adding a family member to assist in finding a missing device. We want to help. Being part of a Family Sharing group and having family members share their location with you is required. These articles have more information:

Here’s how to Set up Family Sharing on iPhone - Apple Support

This article has the steps to take Locate a family member’s missing device on iPhone - Apple Support

Hope that helps. Reach back out if you need further assistance. 

Best Wishes!