# Installing a Caplin Trader package

This page provides instructions on how to include a Caplin Trader 5 Node.js package in your application.

## Requirements

To install a Caplin Trader package in your application, you require:

* A Caplin Trader workspace with the Caplin Trader packages installed. See [Creating a new workspace](creating-a-new-workspace.md).
* A Caplin Trader application. See [Creating a new application](creating-a-new-application.md).

## Installing a Caplin Trader package

Caplin packages are stored locally in the `caplin-packages` directory of your workspace. To install a Caplin Package in your application, run the `yarn add` command and pass the relative path to the Caplin package you want to install.

For example, to install the Caplin Trader package `br-presenter` to the application `my-app`, run the command below from the root directory of the `my-app` application:

```console
$ cd ~/dev/ct5-workspace/apps/my-app
$ yarn add file:../../packages-caplin/br-presenter
```