Select one number which should be your default number for calling purposes.
If you want to set the default number then follow these steps-
Log in to Callhippo dashboard-
Click on User-
Click on the Settings icon.
Click on the respective settings icon to allocate the number to that particular user.
If there are many users then you can allocate one number to many users.
Scroll down to the Allocate Number section-
From here you can make the number a default number.