Dear Pearl Sceviour,
In Book Library you can show/hide some buttons and functions on frontend for dome Joomla groups. Also users can from frontend manage their books.
But if you want to give librarians access to manage the library but without granting access to all of the joomla admin, these requires custom work.
If you want to make some customization with our help, you have to write via our Contact form
your exact requirements and we will give a quote for custom work.