Hi there! I understand you're having trouble finding the sections in the Tacx Desktop App to toggle app settings and/or manage Garmin Connect login. Let’s get that sorted out for you.

First, can you tell me a bit more? For example:
- Are you logged into the Tacx Training app already?
- Are you looking for the general app settings, the login section for Garmin Connect, or both?
- Have you been able to connect your Garmin Connect account before, or is this your first time trying?

Once I know a bit more, I can guide you step-by-step. In the meantime, here’s what usually applies on Windows with Tacx Training Desktop app:

1. Finding Settings in Tacx Desktop App:
Typically, after launching the Tacx Training app on Windows 10, look for a gear icon (⚙️) or a menu option in the top corner, often under your username or profile area. This is where general app settings live, including trainer control and connectivity options.

2. Garmin Connect Login / Linking:
If you want to link your Garmin Connect account, usually this option is under your profile or account section within the app settings. Sometimes it’s labeled as “Connect to Garmin” or similar. Selecting this will bring up the Garmin authorization/login page.

If you can’t find these options at all, it’s possible your version of the app might have a different interface or you may need to update to the latest version. Also, sometimes the app hides certain options until you log in with your Tacx account first.

If you want, I can walk you through locating the login and settings or help troubleshoot if the Garmin Connect login is not working or missing.

Could you confirm a bit more about your current app view and what happens when you try to login or access settings? That way I can provide precise steps for your experience.