These settings control certain aspects of the inline comment form for users submitting comments to a particular project, namely: whether the inline comment form will include a label selector; whether the user must choose a label; what the default label is; and whether Visitors must enter their name and email in the fields provided with the inline comment form.
By default no label selector is present in the inline comment form, no label is applied, and Visitors are not forced to enter a name and email along with their comment. But in certain cases, it may be useful to set these properties for particular projects.