# Select >> Use Cases ||20
```js script
import { html } from '@mdjs/mdjs-preview';
import { Required } from '@lion/ui/form-core.js';
import { loadDefaultFeedbackMessages } from '@lion/ui/validate-messages.js';
import '@lion/ui/define/lion-select.js';
loadDefaultFeedbackMessages();
```
## Pre-select
You can preselect an option by setting the property modelValue.
```html preview-story
```
## Disabled
You can disable an option by adding the `disabled` attribute to an option.
```html preview-story
```
Or by setting the `disabled` attribute on the entire `lion-select` field.
```html preview-story
```
## Validation
A validator can be used to make it e.g. `required`. If you want to know how to do that, please take a look at our [validation examples](../../fundamentals/systems/form/validate.md).