This function is only available for the Advanced plan.
For the Standard plan, you can use this function by applying for and using the Drive option.
In Drive, you can mark files and folders you use frequently or are significant as important. Also, you can separately view only the files and folders that you have marked as important.
will be displayed on the files and folders marked as important in Drive.
You can view files and folders marked as important separately. You can also view the mark on where files are attached or saved.
Mark and unmark a file or folder as important
Mobile
- Tap
of the file/folder to mark or unmark as important. - Tap 'Mark as important' or 'Unmark as important'.
PC Web
- Click
on the top. - Click
of the file or folder to mark as important or 
to unmark.