Hello. Thank you for contacting the Toolset support.
I would like to know here - do you mean that you want to add front-end filter where you can select the date for default post date field? or you want to add the filter for custom date field?
I have CPTs and would like to create a search with view.
In the search I would also like to insert the possibility to filter the results through the publication date (only for year).
I can't find how to include this querry in the search.