Who can serve a summons to the military registration and enlistment office?

Or a courier? Answered by lawyer Smbat Alikhanyan, general director of a law firm. Rate the material
Источник — The summons can only be served by: an employee of the military registration and enlistment office, an employee of the Ministry of Internal Affairs or the Russian Guard, an employer. 53 dated March 28, 1998. 4 Federal Law No. All other categories do not have the right to bring you this document. 
At the same time, the summons is handed over personally to the draftee against signature. Story Russian special operation in Donbass and Ukraine Expert answer 0 + –

The decree on partial mobilization gave rise to many questions related to the organization of the process. Only these categories, according to Art. Can a postman bring a summons to the army?