Hi @patrickkarl,
Thanks for reaching out to us.
The ‘Resume’ and ‘Photo’ fields in the Form Builder are unique fields. Both of these fields are uniquely displayed and handled in the applicant details screen when compared to the rest of the form field types. Also, allowing multi-file upload support to the resume field will make it incompatible with the main plugin ( free ) as this field is provided as default. This can lead to issue with future updates in the main version. So, both only supports single file uploading.
File fields are specifically provided in the form builder if you need multi-file uploading. You can add a file field and use the ‘Maximum Files’ option to enable multi-file uploading. Increasing the limit to more than one will allow multi-file uploading. You can also add the same file types for the file field as resume by specifying a comma-separated list of supported file types.
Resources:
https://docs.wpjobopenings.com/settings-pro/form#file-field-type
Regards,
Vidya K V