> For the complete documentation index, see [llms.txt](https://salsa-digital.gitbook.io/govcms-site-builder/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://salsa-digital.gitbook.io/govcms-site-builder/unit-8-site-building-exercises/extend-content-types-with-new-fields/exercise-8-1-add-an-external-link-field.md).
# Exercise 8.1: Add an external link field
In this exercise we’ll add a new link field to the *Job Posting* content type. The link will go to “More information” on another website.
## Add the link field
1. Go to *Structure* → *Content types* → **Job Posting** and click on the **Manage fields** tab.
2. Add a new field and use the following settings:
3. Click **Save and continue.** This will take you to the Field settings page.
4. There are no changes so just click **Save settings**.
5. This takes you to the settings for this field on the *Job posting* content type.
## Test it
Go to a Job posting and search for the 'More information' section and **Link** field.
## Change the field settings to make link title required field
You can also make the link title field a required field. Follow the instructions below:
1. Go back to the **Manage Fields** page of the **Job Posting** content type.
2. Edit the Link field.
3. Change the Allow link text to “Required”.
4. Save settings.
## Re-test it
1. Update your Job posting content page from the previous example and enter the link title.
2. Compare the look of the content page.
The **More information** fields should now be required fields.
---
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