Define Allowed File Types
This is a text area that allows you to define file extensions permitted to be uploaded by the user with form submission, if you have a “File” field in your form. Comes handy if you want to accept only certain type of files, for example images, documents etc. Each extension has to be separated by a “|” symbol. It is commonly found above the right Enter/ Return button of your keyboard. Here’s value for allowing common image types:
Allow Multiple Attachments
A toggle switch that turns on the feature to allow user submit more than a single file with the form.