Profile: webD-3

Problem: I would like to create a custom search View that includes a custom select field, where the options are defined by a custom shortcode. When the page first loads, I would like to select one of the filters by default.

Solution: The only documented way to select a filter by default in a parametric search form is to use a URL parameter. Any other solution will require custom code. If you want to use a custom shortcode to define the value options for a wpv-control field, you must first register that custom shortcode in Toolset > Settings > Frontend Content > Third party shortcode arguments.