Time applies to everyone in this world.
Time runs linearly unless of course when you have a tool to manipulate time. For Stephen Strange, time is like a sound track—you can choose to rewind, fast forward, and rerun certain parts. This fact alone potentially could make him the most powerful sorcerer in the multiverse. It's a good thing that he isn't interested in multiverse domination—monologuing and goatee twirling are not really his styles. He just wants to the multiverse to follow natural law.
It's easier said than done. Kaecillius wanted time to stay still and people not to age therefore defying natural law. Ironically, the Ancient One also defied natural law to live so long so that she could impart the wisdom that sometimes he needs to be flexible—defying a small part of natural law to ensure the whole natural law remains the same.
Dormammu wanted to dominate this world and make time stay still. He returned the favor by introducing time to his realm.
Time applies to everyone in this world plus anybody else Stephen Strange deems fit to be included.
Notes:
-Time definitely is an important theme in the movie. It's hard to include time and applies to only Stephen so I did what I could so this chapter is definitely different than others. But I love the idea of BAMF!Stephen Strange.
-I love the idea of using time for T. Thanks to DawnThorn for telling me that it's a good idea (in my head, not sure if it's translated well on paper or on screen :) )