I have a form field where users might need to select multiple values from drop-down box. In the form editor I checked off multiple selections checkbox and another option appeared underneath it titled "Visible Lines" (screenshot is below).
1.) Why is Visible Lines an option when Multiple Selections is checked?
2.) It won't let me select a number less than 4; is this because I have 4 values for field?
3.) Is it considered a best practice to make all values visible for fields where more than one value can be selected?
4.) How can users tell if it's possible to select more than one value for field? I pointed this out for users on form (see screenshot below). Thoughts?
5.) I assigned String field type for this field, but should I have assigned Text Area field type instead? I was concerned about max number of characters each field type can successfully collect and store, especially when users can technically select all values.