How to link 2 CMS automatically

I hope you’re doing well!
I have a CMS that references companies and the other references HRs. I have a multi-reference field for assigning HRs for each company. Now what I want is a way that each company’s HRs show automatically without me choosing them one by one manually. I have added the name of the company in the HR CMS to each person and I don’t know how to make each company pull its HRs automatically.
I hope that you’ve found a solution to this.
Thanks a lot

Here is my public share link: LINK
(how to access public share link)