Ok, I know that my ip cam "Grandtec Grand wifi camera" (I am using it with a patch cable), is not in the list. so i understand that first i have to do the following:
"LinuxMCE has a wrapper that connects to Motion, called "Motion Wrapper". This wrapper is added as a "device" on the "Interfaces" page. You must have this interface installed before setting up cameras"
so in the admin page on the tree view under devices-interfaces i added (have now) motion wrapper - core/hybrid (i am testing on a hybrid right now).
Now I already do not understand what i have to fill in "type", "number of ports" and so on...just the first 6 fields.