Currently, the option for setting an "Advanced Click" does not appear for my MX Master 3 when attempting to customize any of the Microsoft Office apps that have pre-loaded customization templates provided by Options+. This is very frustrating, as I like to map a click of the thumb button as a double left click. The only semi-workaround at the moment appears to be setting a Smart Action, but after system restarts the Options+ app erases the initial app-specific trigger action for the Smart Action, causing it to stop working. Please enable the Advanced Click option for apps with built-in customization templates.