Full Calendar

1: Display at frontend

You can use Elementor or Shortcode to display template like here:

2: Config in Elementor or Shortcode

Config Elementor

Category: Choose All or a category Filter Event: All, Upcoming, Special, Past

Config Shortcode

[ovaev_fullcalendar category="all" show_filter="yes" filter_event="all"]
<!--
category: all or get by category slug.
show_filter: show/hide Filter Event.
filter_event: all, past_event, upcoming_event, special.
-->

Customize Template

Copy file Plugins/ova-events/templates/elements/ovaev_events_calendar_content.php to Your-theme/ovaev-templates/elements/ folder. Note you have to create these folder.