Manual approval doesn´t work

Investigating in the documentation I have discovered that it should have a tab called pending approval but I do not have it, does anyone know how to solve this? I need to manage the assistants.

Some wondered how I approved people before, well, I registered myself as an assistant without completing the payment, so when I searched among the records it appeared as pending, then I deleted my name from the search bar and pressed enter, that way all the people who were pending approval appeared, but that no longer works.