From what I read in the documentation this component can hide non-visual components of the form and clicking on it can display these components, but in my tests this does not happen when I put component of type TDataSource in a form by right clicking mouse in "component List Editor" the Editor is not shown to me see the video in the link below to understand better.
https://mega.nz/#!V65HAAAY!V2H82kk2YOe6W1ccuBPXI0ADkK_eG2K1mokQIM02ALII'm using EhLib's last summer trial with Delphi Rio 10.3
Thankful.