You can submit names to the temple prayer roll online.
https://www.churchofjesuschrist.org/temples/prayer-roll?lang=eng
Those with a special relationship or interest may submit the names of up to 5 individuals per request who are sick or otherwise afflicted and are in need of the faith and prayers of temple patrons. Names remain on the prayer roll for two weeks.
Wonderful information on how to submit names for the Temple Prayer roll :)