Right-click the folder you want to star. 

Click "Starred" to find your folders/documents you've starred.

Right-click the document you want to add to a workspace (whole folders cannot be added to a workspace). 

Navigate to [https://drive.google.com/drive/u/0/workspaces](https://drive.google.com/drive/u/0/workspaces)

Click "Create new workspace" or add it to an existing workspace. 

Click "Workspaces" to access items you've added to a Workspace. 

Google Drive is a cloud-based storage and synchronization service developed by Google. Learn how to upload files, videos, and others to Google Drive, share permissions, and more. Other tools in Google's suite of productivity include Docs, Sheets, and Slides, enabling real-time collaboration and easy access from any internet-connected device. Key features include file sharing, version history, robust search, offline access, and seamless organization.

Google: "Starring" Files and Folders and Adding Files to a Workspace.

To add something to a Workspace