Xcelium 21.09 Installation setting and manual(?)

Hi, all. I am new to Xcelum functional verification. I installed Xcelium 21.09 and spent 1 hour searching for the binaries like xrun.

It is so weird that the major binaries are listed in tools/bin.

I cannot find an intuitive manual to set up an environment like Innovus. I searched a lot and then found the set-up instructions for Xcelium as follows.

https://support.cadence.com/apex/techpubDocViewerPage?xmlName=simoverview.xml&title=Overview%20of%20Running%20the%20Xcelium%20Simulator%20--%20Table%20of%20Contents&hash=&c_version=21.09&path=SimOverview/SimOverview21.09/SimOverviewTOC.html

I am stupid and wonder why Xcelium is so different from other products. Why is there no tutorial introducing how to set it up? And why did no one put the installation instruction in the first section in the manual?