Solution
When the PXIe-1095 chassis is shipped, it will be installed on the right edge of the chassis. However, you can always move it to the other available slot if needed.
In order to dissipate 82W of power in every slot, both 1200W power supplies are required. For applications consisting entirely of modules dissipating up to 38W each, 1 power supply is required with the second being redundant. There would also be a small difference in the cooling as well.
The part number for the second power supply is PN 786300-01.