Answer
Yes. If documents are not ready, they can be obtained through a trusted person in Russia under a power of attorney. The representative can order and collect the required records, obtain an apostille and send the originals to the applicant.
A power of attorney is usually issued to close relatives or trusted friends. It should list the powers precisely: which documents may be collected, where an apostille may be obtained, and whether applications can be submitted and duplicate certificates can be obtained.
A general power of attorney is usually valid for ten years, and notaries do not issue one for a longer period. Avoid overly broad powers: describe specific actions, choose trackable delivery and retain scans before sending originals.