I rooted, now how to I get rom manager topic

I rooted my AT&T Galaxy S4 (using the towelroot method if that matters) , but I can't seem to seem to get a rom manager to do a backup.
Any help would be greatly appreciated,
Pettyfan45

Sent from my Samsung Galaxy S4 nicknamed "Gilliam". I am a co-host on the "Fragments of Silicon" podcast