> For the complete documentation index, see [llms.txt](https://help.tillit.cloud/tillit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.tillit.cloud/tillit/knowledge-base/setting-up-tillit/activity-templates/activity/when.md).
# When
## **When should this trigger? 3/3**
In this section, you will set the when this activity will trigger.
If left blank, the activity won't trigger with any event, but can be triggered manually. Even when a trigger is assigned, you can still [trigger an activity manually](/tillit/knowledge-base/everyday-usage/activities/manually-starting.md).
### Adding a Trigger
{% stepper %}
{% step %}
### Open the Trigger Menu
Click + Add a trigger to view the available trigger groups.
{% endstep %}
{% step %}
### Select the Trigger Group
Choose one of the available groups depending on the event source:
{% endstep %}
{% step %}
### Select Event Type & Set Values
Under each group will be multiple options. Select the specific event and configure additional parameters such as Interval (how often the activity triggers, e.g., *every 15 minutes*) or Delay (delay after the event occurs, e.g., *30 mins after event*).
{% endstep %}
{% step %}
### Add Additional Rules (Optional)
To add more triggers, click + Add a trigger again.
(To remove a trigger, click the X icon next to it).
{% endstep %}
{% endstepper %}
## Available Trigger Groups & Events
### **Equipment Events**
Equipment status is controlled via Edge using an integration with some from of SCADA (e.g. Inductive Ignition). The events are as follows:
* Equipment blocked
* Equipment completed
* Equipment running
* Equipment starved
* Equipment stopped
* Equipment suspended
When you select an equipment event, you have the option to enter an interval for how often the activity will trigger (e.g. every 15minutes) and/or a delay between the event and when the activity triggers for the first time (e.g. 30mins after the event).
### **Order Events**
Order status can be controlled either in TilliT or via Edge using tags from SCADA. The events are as follows:
* Order canceled
* Order Changeover overrun
* Order Changeover resume
* Order changeover started
* Order completed
* Order created
* Order paused
* Order ready
* Order renewed
* Order resumed
* Order started
When you select an order event, you have the option to enter an interval for how often the activity will trigger (e.g. every 15minutes) and/or a delay between the event and when the activity triggers for the first time (e.g. 30mins after the event).
### **Activity Events**
Activity status is controlled in TilliT. The events are as follows:
* Activity expired
* Activity failed
* Activity failed retest
* Activity manually started
* Activity passed
* Activity skipped
When you select an activity event, you have the option to enter an interval for how often the activity will trigger (e.g. every 15minutes) and/or a delay between the event and when the activity triggers for the first time (e.g. 30mins after the event).
For Activity triggers, you can select the specific activity you want to reference when. For example, you may want to trigger one activity when the Approval to Start - Filler activity passes.
If you don't set an activity key, then the trigger will apply to all activities. For example, you may want to trigger an activity called ***Team Lead Intervention*** when any activity fails a retest.
### **Shift Events**
Shift events happen when shift patterns start and end. The events are as follows:
* Shift ended
* Shift started
When you select a shift event, you have the option to enter an interval for how often the activity will trigger (e.g. every 15minutes) and/or a delay between the event and when the activity triggers for the first time (e.g. 30mins after the event).
Shift Templates are set via Asset Hierarchy > Shift Templates.
### **Custom Events**
Custom Events that are created in TilliT will be available here. For more details, see [Event Type](/tillit/knowledge-base/setting-up-tillit/events/event-type.md).
When you select an custom event, you have the option to enter an interval for how often the activity will trigger (e.g. every 15minutes) and/or a delay between the event and when the activity triggers for the first time (e.g. 30mins after the event).
