Could find http://imagejdocu.tudor.lu/doku.php?id=macro:open_multiple_images_at_once. Don`t know how to use it. Is there any plugin for that task? Thank you
first of all, from the documenation:
If you want to run the code of the macro you linked, just paste it into the script editor, select Language > IJ1 Macro and click the Run button.