The Journal is suitable for simple, short, online writing assignments in which students will refine their entries over time based on feedback from the lecturer. If you want students to produce long pieces of writing, we would recommend using the Assignment activity.
Staff enrolled on a module and at category-level display when you are reviewing and grading a Journal activity. The workaround is to create a group and assign all the students to the group and to restrict the Journal activity to the student group.