To reject a Smart Match in Family Tree Builder, click on the Matches button.
Find the person in the list you want to reject matches for and then click on the “Matches” tab.
Click on the specific match you want to reject to highlight it and then click the “Change Status…” button in the upper right corner of the screen.
In the window that appears, select “Rejected”. Click OK.
The match will show “Rejected” in red after clicking OK.