To get going quickly running the FH in a cloud provider is probably easiest, a physical hub in the form of a Balance can also be used but obviously has an extra cost for the hardware there vs running a FusionHub virtual machine somewhere.
Here is an example though of getting the FusionHub deployed on Digital Ocean:
Hosting the hub yourself in your office may be viable, if you have a good enough internet connection to support the required bandwidth in and out and also are happy with whatever level of redundancy you’d have too.
You could also do both, depending on your requirements as @MartinLangmaid mentioned you may have equipment in a central studio / MCR etc. that you want to access via the PepVPN, but perhaps send traffic to/from the Internet for services like Teams/Zoom/Skype etc. via a FH in the cloud where you may have more bandwidth available.
The Pep boxes are quite flexible in how you deploy them and how you route traffic in and out and via what path, it is just a matter of configuration.