If you mean account page menu then you can try changing menu items via the hivepress/v1/menus/user_account filter like in this topic https://hivepress.io/support/search/menus%2Fuser_account/
But if you want to make changes only for vendors then code needs additional condition if(current_user_can('edit_posts')) {
For example, I add this condition to code from topic which is provided above
add_filter(
'hivepress/v1/menus/user_account',
function( $menu ) {
// Here is this condition to make changes only for vendors.
if(current_user_can('edit_posts')) {
// To add some menu items.
$menu['items']['custom_item_name'] = [
'label' => 'Custom Item',
'url' => 'some url',
'_order' => 123,
];
// To remove some menu items. For example, 'Listings' item
unset($menu['items']['listings_edit']);
}
return $menu;
}
);
