Can I just sign my Mom's name if I have DPOA?

I sign my name, POA. The paperwork says I can, and it;s less work. I have a very long name and so do they..LOL

If left to my own devices, I sign mom's name and then, next to it, put "by MaggieMarshall, POA." I always ask how 'the powers that be' would like it signed. Some have me sign with my OWN name, then a common, "POA for Mom's name."

We need more information. Sign your name on what exactly? If I'm signing something on my mom's behalf, I usually sign my name and put (POA) behind it. But tell us more about what you're signing?