Navigate to File Cabinet in the NetSuite account and there check for Move file or Copy File according to your need and click on it. As shown in the below image.

Once you click the option Whether it’s Copy or Move it’ll navigate to the next window and there you’ll get options for selecting the files which you want to move or copy.
There will be an option to Move to or Copy to, whichever action you selected. Select the folder where you want to copy or move your files then just here you select every file and you do not need to move or copy a single file at a time.
As shown in the below image.
