Whether we are looking to extend a customizable business entity or a custom entity, the process is very similar. We extend entities by creating new entity fields, forms, views, charts, relationships, and/or business rules. The following screenshot shows these options for the account entity where we added the Twitter Handle custom field:
![](https://static.packt-cdn.com/products/9781789950243/graphics/assets/65e6e3ee-6d48-47b9-aefc-a49b653d1136.png)
We will look at each of these options in detail in the remaining sections of this chapter.