Limit Options for searchable objects

Hello there!

So by default the select in the Search of Mayan (v4.4) allows to choose which object is being searched for.

There are several options and what I want to do is limit those options to only a few. Is there a clean and easy way to do that? I found that the SearchModels that are displayed are received from the “all()” method in “” but I do not know how to proceed from here.

Thanks in advance.