Once a week, plug an internet source into the mirror server, run the tool to fetch updates, then disconnect. All clients will update from the local mirror automatically.
I understand you're asking about (sometimes needed for PCs without internet), but the instruction “write a paper” is vague. eset nod32 offline update
Download updates once to update multiple local machines. Once a week, plug an internet source into
Insert the USB drive containing the update files into the offline computer. Open ESET: Open the ESET NOD32 application. Advanced Setup: Press F5 to enter the Advanced Setup menu. Once a week