In order to use the Checkbox widget, create a new page from wp-admin>pages:

Now edit the page with Elementor:

Type EazyFilter in the search box and drag the Checkbox widget. Here we have the product widget that we created from before:

Now we have to select a filter to render:

Now you can either create a new filter by clicking the highlighted button or use an existing filter. For this tutorial we will use an existing Product Color filter:

After selecting the grid and choosing appropriate filter you now have the filter ready for use:

On the left side, you have control over Query ID, Apply Type, Apply on, Show filter Name, Flow Direction:

When you press publish you are ready to use your freshly minted filter:
