In order to use the latest Ultra Multisamples in ANA 2, you will need to update ANA to version 2.51 or higher. Updates are most easily obtained through Slate Digital Connect. Available for download on our installers page.
Lastly, you will need to install the ANA 2 Ultra Multisample Expansion Pack.
The expansion will be available in ANA 2 under the "Ultra Multisample" Bank.
If the plugin window is not showing or is appearing all white, please see the following article: ANA 2 "White Plugin Window" or "Missing GUI"