navigation bar - facebook iphone app

equityone

I've been trying to change the taskbar icon choice at the bottom of the screen.
Googled/YouTube etc how to change the bar to have my choice of shortcuts.

Every link either on google or YT, all refer to settings to 'Tab bar or Shortcut bar' in Preference section.
Neither is seen in my FB version of settings menu even doing a search in settings.

Anyone know how to edit the bar, trying to remove Marketplace for Feeds and others on the bottom bar.

PHK

I've not used Facebook for a month or so, but you used to simply hold the tab icon you didn't want and if it was removable you could select an alternative.