See the halachos in back of the Artscroll siddur for guidline on what to skip.
????? ???? ??? ?? ??? ?? ???? ???? ???? ????? ?? ????? ??? ?’ ??????:
? ???? ???? ??? ????? ???????? ????? ????? ???? ?? ???? ????? ??? ????? ???? ???? ?? ?? ????? ??? ???? ????? ?? ??? ???? ????? ???? ???? ???? ????? ????? ?? ?? ???? ????? ?????? ??? ?????? ?? ????? ?????? ????? ?? ?? ?? ????? ??? ????? ????? ????? ????? ??????? ?? ??? ????? ???? ?? ???? ???? ???? ?? ????? ??? ?? ???? ?????? ?? ????? ??? ????? ?????? ????. ????? ???? ?? ?? ?? ???? ????? ????? ???? ???? ?? ?????? ?? ???? ????? ???? ???? ?????? ????? ??? ?????? ???? ?????? ????? ???? ?? ?? ????? ??? ???? ???? ????? ????? ?? ???? ??? ????? ????? ?? ??? ?????? ????? ?”? ?? ?? ?????? ?? ??? ????? ????? ????? ?????? ?? ????? ??? ?? ?? ???? ???? ???? ??? ???? ???? ?’ ??????? ?? ??????? ??? ???? ?? ?’ ?? ????? ?????? ???? ?? ????? ??? ??? ?? ???? ???? ????? ???? ???? ?? ????? ???? ??? ?? ?? ???? ???? ???? ?? ?’ ?????? ?????? ??? ?? ?? ???? ???? ???? ?? ????? ??? ?? ??? ?????? ????? ?? ????? ??? ?? ?? ???? ???? ???? ???? ??’ ???? ?? ???? ???? ????? ?? ???? ???? ????? ???? ?? ??????? ???? ?? ?????? ??????? ??? ??? ?????? ????? ???? ???? ?? ???? ???? ????? ????? ????? ?????? ???? ????? ??? ???????? ?? ????? ?????? ????. ???”? ?? ???????? ????? ????? ?? ?????? ????? ?? ?????? ??????? ???????? ??? ??????? ???? ???? ?? ???? ??? ??? ????? ??? ???? ????? ????? ??? ?? ???? ??? ?? ?????? ??? ??????? ??? ?? ???? ?????? ??? ???? ??? ??? ???? ??????? ?????? ?? ???? ?????? ???? ?? ?? ?????? ??? ????? ??? ???? ????? ??????? ??? ?? ???? ?? ???? ???? ??? ??????? ???? ????? ????. ???? ???? ???? ?? ?????? ?????? ???? ???? ??? ?????? ???’ ?”? ??? ?? ??????? ??? ???? ???? ???? ???? ???? ???? ????? ???? ????? ?????? ???? ???? ?????? ?????? ???? ???? ???? ?????
? ?? ?? ???????? ???? ????? ??? ????? ????? ???”? ??? ?? ???? ?????? ??? ????? ?????? ???? ?????? ?????? ?”? ?? ????? ???? ???? ?? ?”? ??? ???? ????? ??? ?? ????? ?? ???? ?????? ??? ?????? ?”? ?? ?????. ??? ?? ?????? ???? ???? ??? ???? ????? ??? ?????? ???? ?? ??? ???? ?? ???? ??? ???? ????? ????? ??? ????? ???? ???? ??? ?????? ???? ?”? ?? ????
The only halachic guidelines when the “short Shemoneh Esrei” or ?????? ????? ,(i.e. the Shatz says it before the tzibbur through kedusha) is permitted as practiced today I can find in the classic Poskim is from ???? ????? ???? ?? ???? ? ???? ??????? ??? ??? ??? ???? ????? ??? ??????, ?????? ?”???? ???” ?? ???? ???? ???? ?”????”, ???? ????? “????…” ??? ????. ???? ?? ?????? ?????? ???? ???? ???? ??????? ???? ??, ????? ????? ???? ????? ????? “????” ?”????” ?”?????”. ???? ?? ???? “??? ????” ???? ????? “???”, ???? ?? ????? ???? ?? ?????? and is in reference to someone who missed minyan and says the beginning of his own ??”? out loud. What is common in workplaces, simchas, and some yeshivas where the shatz says the first 3 bearchas out loud and then everyone starts the ??”? seems to be a fairly recent innovation and is most probably discussed by contemporary poskim which I do not have at home.