Yes. Add any enumeration-typed attribute to the searchbar, set the resulting searchfield’s property “Allow multi-select” to Yes.

Unfortunately you can only select one default value. Not two or more.

Currently I have the following:
- I have a dataview with radiobuttons (source = entity) → The “RadioButton OnChange event” triggers a microflow to update the filter for the listview.
- I have a listview containing data, based on the filter selected in the dataview. The source of the listview is a microflow. The microflow contains a “retrieve list” and a “filter list”.

What I want to do is instead of using the radiobuttons as filters, I want to use checkboxes.  
 

You should take a look at the anysearch widget or the advanced Grid Search. If you take a look at the demo app with it, it should be very helpfull