Can't create "multiple presets" in MIDI Device Manager

Thank you for your response. I’m not a beginner. I’ve been using Cubase since version 1.0 for the Atari in 1989. I’ve attached a screenshot of the “Add Multiple Presets” dialog. Please show me where the field is to set the number of presets to be added. Clicking “OK” creates only a single preset! I need to be able to quickly create five banks of presets, with 128 presets per bank.