Google Calendar does not display alarms from subscribed calendars. But you can set the alarms in a different way.
Log in to Google Calendar.
Take a look in the panel in the left edge of the window.
If needed, open Other calendars by clicking to show the calendars.
Click and select Settings.
Click Add notifications.
Set the desired notification for both Event notifications and All-day event notifications.
Updated Wed, 08 Feb 2023 12:08:23 +0000 UTC