Describe the step$-$by$-$step process of creating a domain, including the creation of two organizational units within that domain. Once the domain and organizational units are established, outline how you would assign special rights to two specific users who are managers, allowing them exclusive permission to edit documents within their respective units.

Furthermore, detail the procedure for enabling offline files and implementing BitLocker drive encryption to enhance data security. Finally, discuss the steps involved in setting up a VPN $($Virtual Private Network$)$ for remote access and configuring a VPN server to facilitate secure connections between remote users and the company's network infrastructure."