Building a form and newly using Nintex. Users have been saving forms to SharePoint libraries and folders for several years. One library for each year and below various folders with files including emails.

Need way, unsure how or best control to use, to let user select a particular library and file (or at least library) and save that path (?) link (?) in the form field to make it easy in future to get to that library and file. Going forward will simply attached files to a form as created. Considering converting long SharePoint URLs using google.com URL Shortener.

Hope above clear. Appreciate any help.