How to Clone Wordpress Template

On the wp-admin dashboard we have some custom options such as Sponsors, Speakers, Program.  Hovering over those, we have for example, All Sponsors, Add New, Sponsor Categories.   My goal is to add another called Vendors.  Hoping I could clone one of the existing and modify to accommodate the need.  Please advise, thank you.
Lance McGrewRETIREDAsked:
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Jason C. LevineDon't talk to me.Commented:
Those are Custom Post Types and they usually are declared in your functions.php file.

The WordPress Codex has examples of CPT code:

You just need to find the matching code on your site, copy/paste and then change the name of the CPT to Vendors wherever appropriate.

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