Right-click on the number you want to delete and click "Delete" at the bottom of the pop-up that appears.

Please refer to the following documents for detailed usage.

IM-FormaDesigner for Accel Platform IM-FormaDesigner Designer Help

https://document.intra-mart.jp/library/forma/public/forma_designer_help/item_help/common/item/product/72/table/imw.html#%E8%A1%8C%E3%81%AE%E5%89%8A%E9%99%A4

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iAP/Accel Extensions/IM-FormaDesigner for Accel Platform/All Updates
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