Thank you for the help. I didn't think there was a way - but there are more clever people (yourself) that know the capabilities of SS more clearly!
Thanks again!
It is not possible to use a the default select drop down on SS for multiple selections. Although you can change its behaviour in the browser with JavaScript. SS's backend does not expect multiple selections and only processes one of the selections.
You can of course use checkbox to select multiple items.
If your client is really married to the multiple select, which by the way really isn't a drop down any more but a multi-select list. It may be possible to fake it with JavaScript and CSS. But this wouldn't' be easy and I don't know of any code that does this. The idea would be to use the checkbox but hide it with CSS. Then use JavaScript to build a multi-select list from the checkboxes then when the form is submitted, read the multi-select and populate the checkboxes.
EffectiveEdge got a reaction from creedon in Form Dropdown - Select multiple options
