The 'column name' is what the field is saved as in the db. You probably want that to be 'Phone' or 'phone'. Because it's a phone number, the field type will need to be a number type. INT (short for integer) will work. The form regex (short for regular expressions) is a validate field. It will limit the kind of data a user can add to the field.

example:

^\d{3}\d{3}\d{4}

^ - means at the begining of the input

\d - means search for a number

{3} - means 3 numbers {4} for four

So it only allows that type of input from a user, or it will return an error. The other fields are more for advanced users and you can leave blank for now.

This just creates the field for the phone number to be stored. You have to add a phone number input to the add.html template: <input type=text name="the name of your field" value=default value> etc.

Hope this helps,

- Jonathan