Select the Null (Empty/Trigger) Listener from the Listener Type drop down.
There are 3 tabs: Basic, Advanced and Scheduling.
1. Basic: Here you can specify Trigger Interval.
2. Advanced: At the Advanced tab, you can specify:
Initialize on trigger only: If enabled, Listener doesn’t start up until a trigger initializes it.
Allow command-line invocation: If enabled, Listener can be invoked using the CLI client application.
Restart on listening error: If enabled, Listener will be restarted after an error occurs.
FIFO Queue Name: The FIFO stuff enables a “First In, First Out” queuing mechanism between Listeners and Transports. If a “FIFO Queue Name” is provided, that name will be used as a key for a queue Transactions & will be pushed into before reaching a transport. They’ll be ordered in this queue according to when the Listener created them.
FIFO Queue Delay: It is the interval between updates/checks against that queue. Providing a queue name guarantees that a given Transport sends transactions in the same order the Listener created them in.
3. Scheduling: This tab allows you to specify the start times and end times for scheduled execution (choose the three dots to the right of the line in order to see this window). Also you can specify days of the week or particular dates to exclude from scheduling. The Time Zone drop-down menu allows to specify the Time Zone that should be used for scheduling; by default, it is set to the Time Zone of the console during initial configuration.