Add my app launcher directly to MATE panel?

Hi folks. My latest app includes the ability to add a desktop launcher (shortcut) and another to the main menu. Simple enough. I’d like to also include something to add a launcher directly to the MATE panel, but I’m not finding info about what commands, files/folders might be involved in doing that. Does anyone have any suggestions? Not asking for a complete solution, just tips/pointers leading me in the right direction.
Running on Mint 21.3 MATE. Thanks.
BTW, I have posted the same question on the Mint forums, but no replies after several days.

Hi Bill, are you just looking for a way to launch another app from your main app? E.g., a function in app-A lauches app-B?

Thanks for the reply. No, I would like to click a button in my app and have its launcher added to the panel…without the usual process. ie: NOT “open main menu > select category > right-click on launcher > add to panel”.