> For the complete documentation index, see [llms.txt](https://mars-15.gitbook.io/dispatchito/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mars-15.gitbook.io/dispatchito/getting-started/quickstart.md).
# Quickstart
For a basic scenario we need two objects: one expecting an event to happen - we call it Subscriber, other being an originator of this event - we call it Sender.
### Subscriber
1. Inside a class expecting an event, right-click anywhere on the event graph and search for Dispatchito Subsystem:
2. Drag a pin off of the given label and search for SubscribeToTopic function:
3. Press the dropdown for the Topic parameter and select desired tag for the topic of this event:
{% hint style="info" %}
Learn about Gameplay Tags from official [documentation](https://dev.epicgames.com/documentation/en-us/unreal-engine/using-gameplay-tags-in-unreal-engine).
{% endhint %}
4. Drag from the Callback parameter and search for Add Custom Event:
5. Name your event handler and add logic you want to be executed when the event is sent through Dispatchito:
We are done here. Let's now set up the sender of the event.
### Sender
1. Inside a class sending an event, right-click anywhere on the event graph and search for Dispatchito Subsystem:
2. Drag a pin off of the given label and search for DispatchEvent function:
{% hint style="warning" %}
In this case we are using Dispatchito subsystem directly, so make sure to select function variant that's not under Utilities group. Utilities provide 1:1 wrappers for functions that allow to skip using label of the subsystem. Always make sure to use proper variant.
{% endhint %}
3. Press the dropdown for the Topic parameter and select desired tag for the topic of this event:
{% hint style="warning" %}
Make sure to select the same topic as the subscriber.
{% endhint %}
That's all we need for this simple scenario.
### Execution
Connect nodes to paths of execution in your code. E.g:
1. Subscribe in the actor's BeginPlay function:
2. Call DispatchEvent on a key pressed from a PlayerController:
3. Start PIE, press the bound button and watch the magic unfold:
