Sharing symbols between projects
If you want to share assets between projects, like a logo image or Symbol of custom controls, we suggest creating a Balsamiq project that serves as a template for new projects.
Start by creating a new project. Add to it any images, icons, or Symbols that you think you'll want available to all your projects in the future. If you are designing for a specific platform (e.g., mobile or web) you could also add a control such as Browser, Window or iPhone to the first wireframe. This is your template project. You may want to save it with a name that includes the word "template."
Then, whenever you want to create a new project using this template, duplicate the project, rename it, and start editing!
You can do this for all new projects to start with a built-in library of commonly used assets.