Basic Cluster Install of Nifi

[David Snyder via users]

Hello -
I am following the instructions for a Basic Cluster Setup from the nifi apache 
site.  I am using 3 Ubuntu 22.4 clients to set up the cluster.
I am new to nifi.
My question is, so I first perform installs of Nifi on each of the 3 clients 
first, or do I install nifi in clustering mode on the 3 clients?
Thank you for any guidance/recommendations!
VR,
Dave Snyder