Go to Family List view and click the Customize button.
Then, highlight Family Search ID and click the Add to View button. There is no search box. You just have to scroll until you find Family Search ID. You can move it up or down the list to move the column left or right on the page. My experience is that RM doesn’t remember column widths in Family List View. Remembering the widths needs to be an enhancement request. So any time I change the columns at all, I have re-adjust all the column widths.
