Have your System Administrator complete the following.
Go to Setup > Lookup Tables > Market Segment in RMS.
Select a Market Segment and choose 'Edit'.
Select 'Add' to create a new Sub Market Segment.
Enter the Sub Market Segment Code.
Enter the Sub Market Segment Description.
Select 'Save/Exit' to store the changes made and return to the Market Segment setup screen.
Select 'Save/Exit' to store the changes made.