Default Sheets

Specifies the initial number of worksheets to create in a new workbook.

Supported on: At least Windows 7
Sheets in new workbook

Registry HiveHKEY_CURRENT_USER
Registry Pathsoftware\policies\microsoft\office\15.0\excel\options
Value Namedefsheets
Value TypeREG_DWORD
Default Value3
Min Value1
Max Value255

excel15.admx

Administrative Templates (Computers)

Administrative Templates (Users)