Within Teamwork Projects, you can change the category that a project is associated with.
Go to the project's Overview tab and click the options button (three dots) to access the project settings.
Alternatively, select the Settings tab in the project's navigation menu.
In the Settings area, go to the General Settings section, where you will see the Category option. When you hover over the category, a pencil icon will appear. Click this to edit the category.
You can choose a different category from the dropdown, or click Manage Categories to add a new one.
Note: You can also change the project category from the site-level projects by dragging projects into the category listed in the panel on the left.
For more information, see: Working with project categories