Typically I would say that only attorneys need to appear at ex parte hearings and scheduling conferences. However, since you are acting pro se, yes you do have to appear. You never want the other party's attorney to attend a hearing or any other type of appearance without you being there to know what happened.
To supplement Ms. Jacobs' response, you want to be at any hearing where the attorney for the other party and the judge will be, for several reasons. The other attorney may make an honest error and you would be there to correct the error. The other attorney may make a deliberate error and you could correct that. Also, it will let the judge see you as a person, not a name on a piece of paper. And, you can make requests of your own. The attorney asks that you do something within 10 days, you can ask for more time, explaining why 10 days is too short.. Or the attorney asks for more time to do something, you can ask for less, explaining why the time they are seeking is unreasonable.
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