Prepare job summaries, if relevant. You can use the job description template you use for each position that you advertise by filling in the template with the information that is relevant to that position. However, if you do (or expect to do) a lot of hiring of a particular position, you might make a special template that includes a summary of that job. This will save you some time.
Highlight the day-to-day activities of the position. This will help candidates understand the work environment and the activities they will be exposed to on a daily basis. This level of detail will help the candidate determine if the role and company are a right fit, helping you attract the best candidates for your position.