To configure the Meet Me plugin for Ultimate Member can be done by going to Ultimate Member > Matches.
Under the General Tab you can set the number of Profiles to show from the matches tab and set the icons and color for the actions.
Under the Meet tab, you can set the number of suggestions to show and most importantly, you can set the filters to be used for Searching.
The User Details section is used to display some profile information under the user card during the matching feature.
While editing the search filters, you can set the label for the search field and set the profile field to search on.