New
#11
Doesn't matter. The logical partitions need to be together that is all. I would put C next to system reserved only because the outside of the drive is marginally faster. You would however need to make space for it first as @NavyLCDR said so move it to the far right and all will be OK.
You have to press "apply" then your system will reboot and Partition wizard do all the pending actions specified.
I'm not sure why you are doing this by the way but Linux will boot from primary or logical partition - it doesn't care.