Ok, them let me write that it is possible.
You start with the howto 😉
You need to know what's going on especially since:
in our office
I agree to some extend that the howto
can look unfriendly, there are so many ways to configure OpenVPN, flexibilty.....
However, a networking guy/girl should be able to set this up using the howto.
There is also a wiki,
https://community.openvpn.net/openvpn/wiki/TitleIndex
What might be helpful to understand how it works, see these two links from the wiki:
https://community.openvpn.net/openvpn/wiki/AvoidRoutingConflicts
https://community.openvpn.net/openvpn/wiki/HowPacketsFlow