Is it possible to hide 'Job Function' as a search filter in External Career Site?

Summary

We want to hide Job Function as a search filter for external candidates looking for jobs

Content

We plan to use custom values in Job function field and these values may not be relevant/would not make sense to external candidates. So wanted to check, if it is possible to hide search filters in External Career Site? If yes, how can we do that?

The Job Function values we plan to use, will be helpful for our internal candidates/employees while searching for jobs, but not for our external candidates. I could add flexfields as search criteria using  HCM Experience Design Studio but did not see an option to hide the preexisting filters. We are using the minimal template.