How do you copy files in File Manager?

Hi All, appologies for what is probably a really stupid question but I am trying to copy 2 video files from one external usb stick to the usb stick I am boooting LibreElec from.

I have gone into file manager and have /var/media/USBNAME on one side and /storage/videos on the other with a double arrow in the middle. If I click on anything a video starts playing. How the heck do I copy the files over!? The videos do play direct from the external USB but I want them all on the one device (there is tones of space free).

Thanks in advance

Matt

Brilliant, worked perfectly! Thanks very much.