It is important that you setup a cron job when you install Gforce. This will enable the application be able to send out notification to members about upcoming shifts. It also handles tasks such as removing temporary files.
To setup your cron job, add this cron command to your server
* * * * * cd /path-to-your-project && php artisan schedule:run >> /dev/null 2>&1
If however you do not have the ability to add a cron job, you can alternatively call the following url once a day:
http://your-url/cron