Once you open a lane for an open play session (not a league or cross-lane game), the Open Lane button changes to Extend automatically.

• Please note: If a Time session is already open, the only option for extending the session is Time. The same holds true if the session is Game based. The system will only present the appropriate option for extending, based on how the lane was opened.
• If Bowlers have played most of their game and you only want to let them finish their game, you can set the Extend Type option to Until end of the game.