reset form

You can add a post hook to execute arbitrary php code.

So if you are able to write a php function to get the users files and archive and move them , then add this function to your functions.php or any file in your mu-plugins dir , then add the function name as a post hook in the final stage, this should do what you want.

thanks for your fast reply.

Can I bother you to write a php function for me that could be placed as a post hook in last stage button and after clicking it, user files will archive (without deleting) and go to first stage to get new files?

No, I can’t do it for you, there is a post hook example somewhere that will help. Look through the code you should be able to find it from memory there is an example dir somewhere.