sprovesti

1. (of a plan, reform) to carry out; to implement
   Vlada je sprovela reformu školstva. — The government carried out an education reform.
   Policija će sprovesti istragu. — The police will conduct an investigation.
2. (of a person) to escort; to take under guard
   Uhapšenog su sproveli u zatvor. — The arrested man was escorted to prison.
3. (of heat, electricity) to conduct; to channel
   Majstor je sproveo struju do garaže. — The electrician ran power to the garage.

The imperfective is sprovoditi; "to spend time" is provesti vreme, not sprovesti.