PVR and Timeshift HDD location

I’m running TVH 4.2 alongside LE on a chromebox, and have multiple clients to add to the network that will all use the TVH on the master chromebox. I currently have a HDD attached via USB 3.0 and use this for timeshift and PVR functions. Is this ideal when I have multiple boxes attaching to TVH, or should I have the timeshift and PVR HDD on the network as a small NAS?

If the NAS is optimal, how do I go about mounting the network location to place this path in the TVH set up?

Thanks