I was trying to install Safecracker Registration with the steps from the site.
I was able to do all the steps with no problems...except the last one.
Configuring Safecracker
Since you are using Safecracker as a registration form (at least in this case), you must allow it to accept data from guests. Go to Add-ons > Modules > Safecracker and find your Member channel, and assign a member as a guest. It is recommended you create a new member named Anonymous.
This is the page that the above paragraph refers to

I am just confused about
Go to Add-ons > Modules > Safecracker and find your Member channel
since I don't see "Member Channel" anywhere.
I am doing it correctly?
P.S. I am using ExpressionEngine 2.5.5 and Safecracker Registration 1.2.0