<em>Hi Ashley! I'm happy to assist you :-)</em>

Please prepare all the documents for the meeting. <em>(As 'all' is written before 'the document,' we must add 's' to make 'document' plural)</em>

請準備好會議所需的所有文件。<em>(According to Google Translate, this sentence is written as </em><em style="color: rgb(230, 0, 0);">'Please have all the documents you need for the meeting.'</em><em> So, you are simply being asked to bring all documents that you will need for the meeting. However, I do not read Chinese, so perhaps you can double-check this!)</em>