Analyst's Notebook Premium version 9.0.6 includes the Local Analysis Repository. I would guess from your message it simply hasn't been installed. Check you have installed it by going to the "Control Panel" and navigating to "Programs and Features". From the list of installed applications, find Analyst's Notebook Premium and select Change. From inside the installer, make sure the option for the Local Analysis Repository is turned on.
Please note, the Local Analysis Repository has been removed from Analyst's Notebook Premium as at the December 2020 release, version 9.2.3 where it has been replaced with a sharable chart store.
Hope this helps.