Yes, to both of your questions. I checked the box next to where it said enable (the obitalk settings and device default boxes are unchecked next to CallForwardUnconditionalAble, etc. and then the number is put in next to CallForwardUnconditionalNumber as 12345678910. When finished I hit submit.
As for:
Voice Services -> SP2 Service -> CallForwardUnconditionalEnable : (checked)
Voice Services -> SP2 Service -> CallForwardUnconditionalNumber : SPx(12341234567)
The only thing I didn't add is the SP2(12345678910) as it showed I was in the SP2Service. I will add that and see if it works.