NX Why I cannot find 'default spreadsheet application' in NX 1953 customer defaults

Before NX12, we can set the default spreadsheet application in customer defaults.

But why I cannot find this setting after NX 1847

Solution

From the NX 1847 release note, NX compatibility with spreadsheet，  
Please use the certified excel version.
 

And NX1847 and later version don't support XESS anymore.

Hardware/Software Configuration

Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: GATEWAY
Function: CUSTOMER_DEFS

Ref: 002-8559928