WP Job Manager & ListingEasy (theme) | Search on specific date

Hi Talents, We're an online listing directory platform, located in The Netherlands. Currently we're building an new platform and we're searching for an Talent which can help us out with one specific element: search (or displays listings) on a specific date. This specific element is not build in as standard in the theme (ListingEasy). We want users to be able to search on date and list the correct listings. To arrange this, I've started myself with some help off WP Job Manager ([login to view URL]). This is the script I've changed it to: [login to view URL] This is on the front-end: [login to view URL] So when I fill in a day in the salary field, the listings are found. However, now we would like to change that search snippet, instead of salary, to an already existing field called: Working Day. This field is already in the input field ([login to view URL] & [login to view URL]). This is the script which is used for the sidebar: [login to view URL] It looks like this on the frontend: [login to view URL] So I want to search listings on that date-function written in this sidebar. Some important sub-items / tasks: Must be done in Snippets (plugin) ! Users can submit listings and add more fields to add more dates. Of course the listings must be found on both of those dates (or 3 dates, 4 dates, etc.). Depending on how much dates the users adds. So in this case: [login to view URL], the listings should be found on 'Donderdag' and 'Zaterdag'. The value ([login to view URL]) should be working with more values. For example: 'vrijdag' + 'vrijdag 18 June' + 'vrijdag 18 June 2021'. So the listings could be found on more values. When there are any questions, don't hesitate to shoot me a message. Thanks a lot so far. Best regards, Aron Verhoeven