§1. The cardinal dean is competent to ordain as a bishop the one elected as Roman Pontiff if he needs to be ordained; if the dean is impeded, the assistant dean has the same right, and if he is impeded, the oldest cardinal from the episcopal order.
§2. The senior cardinal deacon announces the name of the newly elected Supreme Pontiff to the people; likewise, in the place of the Roman Pontiff, he places the pallium upon metropolitans or hands it over to their proxies.
Source: Code of Canon Law (Vatican.va)