Usually, the Tufin Orchestration Suite (TOS) is going to be installed on TufinOS. In virtualized environments, TufinOS requires VMware ESXi as basis. 
Some companies don't continue using VMware, they are switching to Proxmox. This environment is not supported by TufinOS, so the installation of Rocky Linux is necessary to have an OS for TOS. This combination is supported by Tufin.

In Rocky Linux, the sudo environment is not enforced as it is when installing TufinOS. This is a problem if a Tufin Extension like e.g. Rule Lifecycle Mangement (RLM) is going to be installed. 
The routine installing the Extension states errors like e.g. "kubectl - command not found" or "tos - command not found" - even if TOS is installed and working correctly, i.e. these commands work when using them at the command line as root. 

The reason for this behavior: using "sudo" is hardcoded in the code of the Extensions. If it's not configured, the script doesn't work.

If the installation is done at the console with the permissions of root, editing the Extension might help. 
Open the Extension using e.g. vi / vim and remove all "sudo" references in commands. So if there is the command
   "sudo kubectl" 
replace it with a simple "kubectl". Doing the same procedure for "sudo tos" and saving the file allows an installation without this kind of error.