G Suite - Form to sheet to Doc (drag, drop, rename and store in Google Drive)

i have been playing around with using google's gsuite to build a set of forms for my team to upload documents and track the progress of projects that they are working on. I need some help pulling it all together and ultimately want to have the following process Form is completed by team member - Files are uploaded (have this working) IF some files are uploaded but not all, I want to have a document that is created with the outstanding documents can be dragged into the doc and the file uploaded into the orignal sheet for storage. When the sheet is updated the doc is also updated until all the required forms have been updated Some required documents are only required once, others may be required many times. Thanks