Simple Calendar

1: Display at frontend

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

2: Config in Elementor or Shortcode

Config Elementor

Config Shortcode

[ovaev_calendar category="all" filter_event="all"]
<!--
all
past_event
upcoming_event
special_event
-->

3: Customize Template

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