I have a few Excel 2013 pivot tables that use a timeline slicer to change their date filter. I cannot change the dropdown that allows you to choose months, days, or years when the sheet is protected. This includes when I uncheck "Locked" in the timeline's properties, and allow users to perform all actions when applying protection. I can change the date slider, edit filters, use pivots etc., but that one date unit dropdown is greyed out. Is there any way around this?