Hi @mariaezc –
We don’t have additional information for how to customize the search and filters. It will require custom coding (based on the tutorial above).
We aren’t able to help with custom code requests like this per our support policy, so if you need assistance, you may want to look into hiring a developer via:
https://jobs.wordpress.net/
Alternatively, you might be able to accomplish this using a third-party plugin, Search and Filtering for WP Job Manager. You can find out more about that plugin here:
https://plugins.smyl.es/wp-job-manager-search-and-filtering
As it is a third-party plugin, you would need to work with their support team to configure it.
I’m glad that you got this sorted out.
I’m going to mark this thread as resolved. If you have additional questions about WP Job Manager in the future, feel free to open a new thread.