Put script at the end of <body> section of your page. You only need to do this once per page.
<script src="https://mostwiedzy.pl/js/embed.js"
data-base-url="https://mostwiedzy.pl"
data-language="en">
</script>
Paste code below into right spot on your page
<div class="most-widget" data-widget="Catalog" data-catalog="event" data-limit="10"
data-filter-pf='["Organizacja i zarz\u0105dzanie"]'
data-sort-by-year='asc'>
</div>
