I am assuming that you have already downloaded and imported the AOI into Logix5000 since you linked the download location in this thread
http://www.plctalk.net/qanda/showthread.php?t=91195
and that what you are actually asking about is how to put an SCP instruction on a rung.
There are a few different ways.
You are probably most familiar with the instruction pallet so I'll cover that first.
Pick the Add-On tab on the instruction pallet and find SCP and drag it to a rung.
You can also go to the project tree on the left hand side, under the add on instruction folder, click on the SCP you imported, and drag it to a rung.
My favorite way is to use the mnemonic editor. Double click on a rung number. A line editor will open at the top of your ladder window. Type SCP and hit enter.
(In this line editor you can mnemonically program a rung, which is a faster way to program than the drag and drop method but requires that you be familiar with all the instruction mnemonics.)