I am preparing some reviews of conference contributions. The online review management asks me to grade the assigned papers, add comments for the authors and comments for the program chair. I cannot leave any field blank -- so I am wondering what comments I should give to the chair? To my knowledge, comments to the chair include suspected or actual cases of plagiarism.
Is there anything else, a chair might expect to read from me, the reviewer?
Should I give them a short version of my comments to the authors?
The conference homepage and the reviewer guidelines do not give any hints.
Thank you for your input!