Step 1:

Go to the Notification panel, select your integration

Screenshot_319.png

Step 2:

Click the 「Enable Testing button」 at the right hand side and key the number you would like to send a test to, after that click「Save」

Note: All notification will be sent to the number that you have setup in the enable testing mode.

Screenshot_320.png

Step 3:

Once you have finish testing, disable the 「Enable Testing」 button and click save

Screenshot_321.png