# Building
### Adding Your First Element
Once you've set up the form, you can start adding elements.
If you already have an order loaded in TilliT, you have the option to use it to preview how the Activity Form as you build it. You can do this by clicking the *Change Order* button; you will then be presented with a pop up to find your order.
Next, click on *Add an element*. You will be asked to select an *item type*, followed by a *data type*:
\
You'll need to give the item a *Name* and an *Item Key*. The *Item Key* is generated from the *Name*, but can be changed. The *Item Key* must not contain spaces or special characters. The *Hint* (optional) is a text field for you to provide extra context (e.g. what control to use on the machine):
Finally, you'll be asked to add any additional *attributes* to the item (optional), such as a *Process Variable* or *Active Item Expression* (details of each of these are available in this Help Portal). Once you've added these, click *Save*.
### Editing the Template
If you need to make any changes during the activity setup at any point, or you need to delete the template entire, you do this via the *Edit template* button. This will bring the template settings up on the right:
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://help.tillit.cloud/tillit/knowledge-base/setting-up-tillit/activity-templates/activity/building.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
