If you wish to edit a class in the Studio Portal, select “Active Classes” from the dashboard, then select the class you wish to edit. Then select “edit selected” (see below):
From there, you can edit everything except for tuition information (reg fee, costume fee, billing cycle, tuition fee). This will be fixed in the coming weeks so that you can modify tuition info. If you need to modify tuition info please create a new class for the time being.