When you have a lot of projects in your workspace, it can be tough to find what you're looking for.
To help with this, you can create a hierarchy of projects within Project Navigator.
Nesting an existing project
Go to Project Navigator
Hover over the project you want to nest. Click Edit.
Select the Parent project as shown in the screenshot below & save the changes.
Adding a Parent project upon creation
Click '+New' > 'Project'
Name the project & select the Parent project from the drop-down list
Finish creating the project in the following screens
Navigating between Parent & Child projects
Once you have your parent and children project set up, you can easily jump to seeing all projects together by clicking on the parent project from Project Navigator:
Next, use the project titles to navigate between the projects, as shown here:
That's it! Happy organizing.