For homework discussion, copy/write your content into the text field. Do not use attachments since some people may not be able to open them (and it adds a needless step for them).
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Entitle your original answer (e.g., “Amanda’s response: …”. Then, when replying to classmates, use their names to differentiate from your original post. (e.g., “Kyle, you made a good point…”) etc.
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You need to post your homework answers by 3pm on the day that the homework would normally be discussed in class. In case this isn’t self-explanatory, please see below.
You never have to complete your homework on the same day you had the lecture for that content.