If you want to set a default filter in the portfolio other than “Show All” you can add a data-plugin-options and set the default filter, here’s an example:
Let’s say you want “Logos” to be the default filter:
<ul class="nav nav-pills sort-source" data-sort-id="portfolio" data-option-key="filter" data-plugin-options='{"filter": ".logos"}'>
<li data-option-value=".websites"><a href="#">Websites</a></li>
<li data-option-value=".logos" class="active"><a href="#">Logos</a></li>
<li data-option-value=".brands"><a href="#">Brands</a></li>
</ul>
Note that you also need to add the “active” class in the default filter.