You can add comments to a project as long as you have one or more Workflow tasks assigned to you for that project. Project-level comments are used to summarize your overall feedback or to call attention to an issue that occurs throughout many of the documents in the project.
There are two types of comments: user comments and standard comments. User comments are custom comments created by the user to address a specific issue. Standard comments are pre-defined comments that are created by a system administrator. Standard comments can provide a convenient way to quickly add often-used comments to projects.
Note:
Depending on the configuration of your system, standard comments may not be available.