Posted
Open your ChronoForms7 form "Settings"
Make sure the "Upload Files" behavior is enabled.
Go to the form "Pages" area *Select Fields
Drag a File field to the "Views" area
Open the file field settings and open the "Advanced Settings" section
Select "Accepted Extensions & Size"
In the "File upload extensions", write the extensions you want the file field to accept, then enter the maximum file size to allow.