How to edit sms field default, to only allow a list of countries

1. Go to your webinar editor and then click on the Registration Menu and Click on Edit in the Registration Fields section
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2. It should now show you the list of fields, from there find SMS Number and click on the pencil icon to edit it and it will show you the following screen
   
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3. From here you can set your default country or set which countries you want to allow

You can edit which country you want to show at SMS/Phone number's default field,

U.S. is a default. (as shown below)

To set to some other default country, or display only a select list of countries that you want clients to choose from, Its done from Registration Fields section as shown below, Edit

Then you can select the Default Country from pulldown tabs, or check/uncheck those countries you would like to show.

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