How to make files from a network drive available offline?

Question

Windows

There is a windows server. A third-party drive (network drive) Bitrix24 is connected.
Everything is OK, I am connected and have access to files, but only when there is Internet.
Interested in the possibility that there would be access to files on a network drive and offline too.
I suppose that I have 2 options:
1. How to make it so that when the network is turned off, access to the files on the network drive still remains
2. Perform daily copying of files from the network drive to a regular drive

Both I don’t know alas, how to implement, because I don't know Windows administration at all.
Please tell me how to do this, or if I missed some other solution to the problem - write to me about it.