I am new to JW 7 and not sure how to display the Fast Forward and Rewind buttons on the controls. I found this page, but not sure how I would add the controls using it https://developer.jwplayer.com/jw-player/docs/developer-guide/customization/css-skinning/skins_reference/
We do not have built-in functionality to add Fast Forward and Rewind buttons, but you could potentially use that skins reference doc to help add buttons via Javascript and CSS.
Here’s some sample code that would add both a rewind and fast forward button (set to seek the player back or ahead five seconds) to the control bar: