Support for Windows under Meraki Systems Manager is poor. Profiles (settings) that change device-specific settings (such as Wi-Fi SSIDs) cannot be pushed to a managed device unless the user who enrolled the device is logged in and has admin privileges. Yes, that's right. And what if you have more than one user on the same device? Well, that sure is a good question.
Basically, the only thing SM is good for on Windows is remote access and keeping track of the devices. Pushing profiles, which is easily done for macOS and iOS, is essentially impossible for anything important. Use group policy instead.