If you want to insert the two new columns after Name means you can use modern insert column activity
You need to give the details like where to add “after” and in the relative column “Name”
In column header you need to give “Prize”
Next another one insert column
where to add “after” and in the relative column “Prize”
In column header you need to give “Owner”
To enable modern activities checkout this link
hope this helps!
Regards
Sudharsan