You can add a service to a project at any time—either during creation or later in the settings of an existing service.
When creating a service, you can select a project at the final step of the setup process.

You can also start creating a service directly from a project page. In this case, the corresponding project will be automatically preselected in the creation form.

The easiest way to add a service to a project is from the project page itself:
Select the desired project from the left-hand menu.
Click Add to project at the top of the page.

Choose one or more services you want to add to the project.
Save your changes.

Alternatively, you can change the project in the service settings. For example, for servers this option is available on the Plan tab.
