In Azure App Insight, how to get properties of events tracked from App Center?

I use App Center with a Xamarin.Forms mobile application. I use App Center's Analytics, especially Events to log a lot of information.

In order to compute those informations, I use Azure App Insights. I have configured the export from App Center to App Insight, it is working well.

My problem is, in App Insight, I can see Events, but I cannot see the properties of the Events.

For instance, from that doc https://learn.microsoft.com/en-us/appcenter/sdk/analytics/xamarin#custom-events I am able to see the "Video clicked" event, but not the "Category" and the "FileName". How can I have those informations in App Insight please ?

Also, is it possible to know a relation ship between each properties ? In other words, to group all properties by date and time they have been tracked ?

Thanks in advance :)

Here are two print screen to illustrate my question :

You can use this query in Application Insights Analytics:

customEvents 
| where timestamp >ago(90d) 
| where name == "your custom event"

Then to see if the properties can be fetched in the results.