step up to

step up to (someone or something)

To move in front of or close to someone, something, or some position. He stepped up to the man and told him to back off. You'll need to step up to the line while getting your photo taken.
See also: step, up
Farlex Dictionary of Idioms.

step up to something

to walk to something, especially a counter or a bar. Jake stepped up to the ticket counter and bought a single ticket for the balcony. When Wally stepped up to the ticket window, he learned that the show was sold out.
See also: step, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • step up to (someone or something)
  • step right up to (someone or something)
  • step right up
  • step back
  • step out of line
  • run to
  • step forward
  • step out
  • step out on someone
  • you'll catch your death