HELP Directory function Filter GRIDBOX

I am creating a job search website. I want to add a filter system with the fields of:

+ Job Position:
+ City:
+ Salary:
+ Experience:
+ Working Time:

I saw this Directory function

https://www.balbooa.com/gridbox/directory

My idea is to create an internal page where I place job offers with filters for the search engine.

But I can't find how to install this directory and filter system.

Can you help me with this Gridbox function. It urges me.

How do I insert the filter on the page and how do I register the jobs so that they appear later in the filter.

PROJECT: http://s833285828.onlinehome.mx

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