If you want to research to see if there is a match, you click on "Unmerged Match"
If you have researched and the profiles represent two different people, you click on "reject match."
You find these two options by looking under "add" in the pull down menu in the upper right hand side of the page. pull down and click on "matches and merges." When the screen comes up, type in the last name, dash, and the wikitree #
Hope this helps.