How to add another iphone to find my iphone app

- How to add another phone to find my iphone app
- How to add another device to find my iphone app
- How to add another apple id to find my iphone
- How to add someone to find my iphone app
- How to add family to find my iphone app
- How to add airpods to find my iphone app
- How to add device to find my iphone app
- How to add phones to find my iphone app
- How to add ipad to find my iphone app
- How do you add an iphone to find my iphone app