How i creat a command button in first column of Excel iGrid Anyone help please

There is no property or easy 'switch' for that. In VB6, we can do this using custom drawing. Look at the Command Button Cells demo here:

https://10tec.com/activex-grid/extra-samples.aspx 

But I doubt this will work in Excel UserForms the same way smoothly like in VB6. Perhaps, you will have flickering or other 'side effects' related to the nature of VBA forms.