You can use Shortcode to display template like here:
2: Config in Shortcode
[ovaev_event_filter page_per_posts="9" time="upcoming" order="ASC" order_by="ovaev_start_date_time" featured="yes" excl_category="" incl_category="" template="1" column="3" /]
<!--
page_per_posts: 9
time: "upcoming" or "today" or "week" or "weekend"
order: DESC or ASC
order_by: ovaev_start_date_time or event_custom_sort or date, ID, ...
featured: yes
excl_category: ID or Array (term_id)
incl_category: ID or Array (term_id)
template: 1, 2, 3, 4, 5, 6
column: 1, 2, 3
-->
3: Customize Template
Copy file
Plugins/ova-events/templates/shortcode/ovaev_event_filter.php
to
Your-theme/ovaev-templates/shortcode/ folder. Note you have to create these folder.