MediaWiki: Tweeki-config-hideexcept
From Tweeki
Use this to hide an element for everybody except those belonging to any of the groups specified. Usage: $wgTweekiSkinHideExcept[ELEMENT] = [GROUPS];, e.g. $wgTweekiSkinHideExcept['sidebar-right'] = ['sysop']; to show the right sidebar only to sysops (i.e. administrators).