Installing MegaMenu SPFX app

1. Open a web browser and go to the following URL to download the latest version of the SPFx app: https://files.intranet.livetiles.io/megamenu/Apps/LiveTiles.MegaMenu.sppkg

2. Save the downloaded file to a location on your computer that you can easily access.

3. Once the download is complete, go to the site catalog of the site where you want to use the app. Alternatively, you can use your tenant app catalog if you want to make the app available for your entire organization.

4. Upload the SPFx app file (sppkg) to the site catalog. This can usually be done by selecting the "Upload" or "Add" option in the site catalog interface and browsing for the downloaded file on your computer.

5. After the upload is complete, go to the SharePoint Admin Preview Center and navigate to the API Management node. Check if there are any pending access permissions related to the app. If there are, review and approve them to ensure the app functions correctly.

6. After approving the api access in SharePoint, you have to grant admin consent for any permission requests related to the app, Please go to the following URL. Review the permissions requested an proceed with consenting to grant the necessary permissions.

7. Now, go to the site content of the specific site where you want to add the app. Click on the "New" option and then select "Add" from the dropdown menu.

8. In the "Add an app" page, you should see the LiveTiles MegaMenu app listed. Click on the app to select it.

9. Click the "Add" button to initiate the installation of the app on the selected site.

10. Once the installation is complete, you can go back to the Navigation Design Studio and configure the app's settings according to your preferences.

Please note that the actual steps and options may vary slightly depending on the specific interface and functionality of the SharePoint site catalog, SharePoint Admin Preview Center, and the app itself. The provided guide is a general outline based on the information provided.