From the main folder homepage, you will see a Document Search button. This allows you to find documents from within folders and the unassigned document list that you would like to move to another folder.

Step 1: Click on the Document Search button and a pop-up window will open. Search for the document(s) you would like to move. 

Step 2: Use the filters at the top to find the documents you would like to move, then tick the checkboxes beside the relevant documents and use the Move Selected to button to choose which folder to move the documents to.