Installed Application Request Routing for IIS, but cannot see it in the management tool for IIS

Server Farms should be the UI branch from which it's configured. The top level of a given farm shows its ARR properties.

If you haven't closed/reopened the Inetmgr GUI since installing it, you need to do that too.

I also could not find the ARR icon when using the server manager. But when I went to control panel, admin tools, iis manager, the ARR icon was there.

I got this problem on Server 2012 R2, I usually start IIS Manager form the command line

It turned out when using:

%windir%\System32\inetsrv\iis.msc

the ARR icons are missing, but when using

%windir%\system32\inetsrv\InetMgr.exe

they show up just fine.

On Server 2012 R2, both Administrative tools and Server Manager use InetMgr.exe, so both should work, on older OSes, there may be links using iis.msc