‘Find people’ allows you to find photos that contain certain persons. To start the search, you must select one or more photos and choose the relevant face of the person you are looking for.

You may select several faces. In addition, various filter options are available, which allow for a more precise specification of the relevant photos.

Display window in which automatically detected facial regions are displayed and can be selected. If necessary, frontal faces can also be marked manually (left mouse button + draw rectangle). 
Use the mouse to select one or more faces. To delete, use the right mouse button.

Different filter options for the persons you are looking for.

Options, so that if multiple faces are selected, you can specify whether to search for photos showing all people, or whether search results should be separated for each person.

This window displays the annotations associated with the face that a user hovers over in the display window.

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Excire Foto AI function:  Find people