Fully replace WordPress Appointments with AIOEC

I have a theme that uses the standard WordPress appointments module. This is fairly limited so I have installed All In One Event Calendar. However, the theme has the standard calendar coded into it. Is there a simple way to replace the event calendar across the site so that when a calendar or booking is called, it goes to AIOEC? For example is there a custom CSS I can add that replaces the standard calendar or perhaps even monkey-wrench it by using Loco Translate to replace all the standard calendar calls with Event Calendar?

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