To Share your Devices with another user, the user must first download the App and create an Account within the App.
On your Device
1.) Once the user has created an account, go to the home screen of the App
2.) Press the profile tab on the bottom right
3.) In Profile, Press Share
4.) Press Add User/Share a Device
5.) Press Manual input (you may need to allow Camera access for this screen to appear)
6.) Then enter the user's email/phone that they used to create their account
7.) Select devices you want to share with the user, then press Share
On the User Device
8.) Press the profile tab on the bottom right
9.) In Profile, Press Messages
10.) Press System Messages
11.) Press Accept for all the devices you want to add to your Account