After you remove the empty variable extent, you use the PROSTRCT ADD utility and the .st file for the new extents to add extents to your database offline.

The command to add extents offline is:
prostrct add db-name .st-file

After you add extents offline, you should update the .st file of the database using PROSTRCT LIST, and then restart the database.

After you have removed the variable extent from the Order area of the sports database, you can then add fixed extents and a variable extent to the area, using sports_add.st. Enter:
prostrct add sports sports_add.st
Then you should update the .st file of the sports database:
prostrct list sports

A new sports.st file is created.

Finally, you should restart the database.