What are the ways to easily change search job options?

Hi,

I am not an advanced wordpress user and i don’t work its code frequently meaning that i forget the few i learn!

I am trying to change the search job options without things getting hard.

Is it possible to make few changes:
1/ add other taxonomies to add search criteria (for example “job hours”)? (astoundify created job location taxonomy with their plugin)
2/ Else, create sub taxonomy or sub category and then filter job search through sub category criteria? For example, into job type: create sub category 1 = “job type 1” (with choices are “freelance”,…)
create sub category 2 = “job type 2” (with choices are for example “night job”, “day job”,…)

Then on the search box in the page ([job]), it should be possible to have 2 checkboxes lines, each one regarding only one sub category?

AM i clear? 🙂

Thanx

https://wordpress.org/plugins/wp-job-manager/