On Mac you can change the default calendar app in the preferences of the Calendar.app, Agenda should honour this setting. On iOS there currently isn’t as Apple doesn’t allow you to set a 3rd party app as the default calendar app.
On Mac you can change the default calendar app in the preferences of the Calendar.app, Agenda should honour this setting. On iOS there currently isn’t as Apple doesn’t allow you to set a 3rd party app as the default calendar app.