The latest Simlink (Version 1.1.16.0818 or later) provides Charts moving map support for MSFS .
Simlink does not place code in MSFS. So unlike other flight sims, there is no path required nor seen in Navigraph Simlink Settings.
To show Charts moving map for MSFS, you just need to install and run Simlink, and select Enable moving maps top right aircraft icon.
Cheers
Ian