Adding custom fields/Checkboxes Field
From Joomla! Documentation
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The Checkbox Field
Provides a single checkbox to be checked or unchecked.
Special options within this field are
- Checkboxes Values
The values of the checkboxes.
Creating the field
Let's say you create a field with the options shown in the next figure.
Using the field in the backend
In the backend while creating an article or a contact you see the field like in the following imageː
Using the field in the frontend
In the frontend, you can see the field as you see in the following image if it is checked only option 2. The option Automatic display is responsible for the position of the field and your template is responsible for the design of the field.
Fields are only displayed in the frontend if you have filled them with data in the article. If it is not a required field, can you forget it?