Choose "Options > Hold in foreground".
This causes that Picoly WebImage always becomes the uppermost window - even if it's not the active window.

Select the pictures which you would like to process.
Then drag the selected pictures on the main window of Picoly WebImage and let go the mouse button.

Picoly WebImage begins immediately with the processing of the pictures.

Choose "Job" > "Show output folder"

This opens a new Explorer window which shown the just processing pictures.
In our example to all pictures a loupe was rendert.