XF 1.5 How to let guests attach files

[Dadparvar]

Hi,

Regarding to: https://xenforo.com/community/threads/advanced-application-forms-paid.55658/page-30#post-1009806
And the answer post below it. (that shows the problem is about xenforo)
How can I let guests upload attachments?

Regards

 

[Paul B]

It's not possible - it would require custom development.