> For the complete documentation index, see [llms.txt](https://docs.novacura.com/flow-connect/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.novacura.com/flow-connect/working-with-connect/create-and-design/modules/manage-module.md).
# Manage module
## Design a module
The FlowScript code in modules are edited within the Designer. To make changes to the module, simply click on the relevant card in the Hub to open the code editor in Designer.
Test your module in the **FlowScript Playground**, which can be launched by selecting **Tools** > **FlowScript Playground** from the menu. Any modules open in the Designer will be automatically accessible in the Playground.
Read more about [custom modules](/flow-connect/reference/reference/flowscript/walkthrough/custom-modules.md) in the FlowScript reference.
## Commit a module
A module needs to be committed before it can be used in an application or component. Click on the Commit button in the top right corner and enter a commit message.
## Use a module in an application
Assets are displayed at the bottom of the Steps panel in the Designer interface. To incorporate a module into your application, simply drag and drop it from the panel onto the application canvas. Modules are not connected to any steps; having them on the canvas will make their functions available in your application.
## Module dependencies
When a module is used in an application it will always use the latest committed version of the module when it's running in Development environment.
When the application is committed, the version of the module will be fixed, ensuring it remains unaffected by subsequent changes to later versions of the module.
When deploying an application version, it will include the module version that was in use at the time of the commit.
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