Here are a couple of steps to follow:

1– Select the option BUY BITCOINS.
2– Enter your phone number and a verification code will be sent to you.
3– Choose existing bitcoin wallet account
4– Enter the bitcoin wallet ID carefully and proceed.
5– Inset your money to the machine and proceed.
6– Print out your receipt.

To locate a Bitcoin ATM Machine or Kiosk around you, visit the coinme website

Here is a quick video to show you how.