There are different types of repositories from where the Trellix Agent retrieves the security content to keep the environment up to date.
The packages in the Main Repository are replicated to a distributed repository in the network.
You can create different users for different types of repository and associate them while sharing the folder.
For Universal Naming Convention (UNC) repository, install NFS in the repository server and share the UNC folder using NFS sharing. Open NFS port 2049 in the ePO - On-prem server and in the Repository server.