Begin by installing the Google Apps Device Policy app on your device.
For Android - Click Install on the Google Play Store page and it will push to your phone or find it in the Play Store on your device
For iOS - Open the App Store and search for Google Device Policy
Once installed, open the app and follow the steps to sign in and authorize administrative access. Please note, you may need to re-sign into your G Suite account after installing the Google Apps Device Policy app.
If you are not already signed into your account, go to your phone’s settings -> Accounts and Sync -> Add account -> Google -> Follow the steps and enter your work email credentials, accepting any prompts as necessary. *Steps may vary depending on your device model.