Hi Ridhwik,
This could be done with some JS but would be very complicated and I’m not too sure it would be worth your time.
To point you in the right direction,
Hi Ridhwik,
you can try to add this class to your datagrid 2.
.columnSelectorLeft .tr:first-of-type [aria-label="Column selector"] .column-selector-content {
position: fixed;
left: 258px;
top: 82px;
}