I have a form where the user can input as many usernames as they'd like. I've decided to show the form with 3 inputs initially, to encourage the user to input more than one username.
When the user clicks the add button on the last row, another input is created, and the button moves to the new input (so it's always on the last row).
There is a delete button on new inputs, but the first one cannot be deleted, as the user is required to input a minimum of 1 username.
Obviously this is a pretty poor interface at the moment.
Are there any existing patterns or examples of good UX that could be replicated in this scenario?