Lets take the scenario of a component com_rdautos that we need to give access to the backend component view Vehicle Management but not to the backend component view Dealer Management

1. In FLEXIaccess backend Tab "Rules" we create the 2 specific rules, one for vehicle management and one for dealer management:

2. In FLEXIaccess backend Tab "Groups", we create a new collective user group, called "Auto Manager" and add all the user(s) we need

3. In FLEXIaccess backend Tab "Backend & Specific", we click at the left, to select the "Auto Manager" user group, and then set the 2 new permissions:

4. Inside the backend entry point of your component, e.g.admin.rdautos.php,
check and add the management tabs links in your component mangement Tab Bar:

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$user = & JFactory::getUser();
 
$canManageVehicle = ($user->gid < 25) ?
  FAccess::checkComponentAccess('com_rdautos', 'managevehicle', 'users', $user->gmid) : 1;
 
$canManageDealer  = ($user->gid < 25) ?
  FAccess::checkComponentAccess('com_rdautos', 'managedealer', 'users', $user->gmid) : 1;
 
$view = JRequest::getVar('view', '');
 
if ($canManageVehicle)
  JSubMenuHelper::addEntry(
    JText::_( 'FLEXI_VEHICLES' ),
    'index.php?option=com_rdautos&view=vehicles',
    $view=='vehicles'
  );
 
if ($canManageDealer)
  JSubMenuHelper::addEntry(
    JText::_( 'FLEXI_DEALERS' ),
    'index.php?option=com_rdautos&view=dealers',
    $view=='dealers'
  );

Similar code should be inside the vehicle / dealer controllers or views to check and prevent user from using the views