The only task manager I show when entering "task" in the search box from the overview (as sea mentions above) is lxtask, which is not installed by default Lxtask is a fairly easy to use task manager, though. You can install it if you wish.
open your add/remove software and check lxtask and install, or from a terminal
yum install lxtask
Then it should show up in the search as sea mentions above when you search for "task"