Within Teamwork, you can select multiple files in a project, to move, copy, download or delete.
In the Files area of your project, click the options button (three dots) in the top right corner and choose Select Multiple Files from the dropdown menu.
When Select Multiple Files is active, you will see a checkbox beside each file. You will also be able to use the Select All and Select None buttons at the top of the list.
Once you have some files selected, you will have options to delete, move or copy, or download the file(s).
You can also manage multiple files in an individual category. Select a category from the left pane of the Files area.
Note: You can use this option to copy all files from one project into another to combine them under a single one.
For more information, see: Moving or Copying Files