Context menu

You can pass your own Context Menu component using ContextMenu prop

const MyContextMenu = (props: ContextMenuComponentProps) => {
const { left, top, onInsertRow, onDeleteRow ...rest } = props
return (
<div style={{
position: 'absolute',
background: 'teal',
left,
top
}}>
Hello world
</div>
)
}
<SpreadSheet
ContextMenu={MyContextMenu}
/>

Demo

fx
Sheet1