We need to have a timer that runs in every minute, to send push notification to apps.
However, the development environment only allows timers to run every 5 minutes.
It's not possible to configure a timer to be executed every minute. However, there are other ways to do what you need.
You can define the timer to wake himself.
After you execute the code you want, the timer will execute the action Wake<Timer Name> that will reschedule the new execution of the timer for the date and time of the action.