Hi,
1. Sidebar
– You can create Custom Sidebar and add elements to that widget, then scroll down to Page Options and choose custom sidebar http://prntscr.com/ptk271
2. Filter
– The filter is working for shop page only.
3. Header
– You can use Multiple Header: https://www.youtube.com/watch?v=BpeXfzNwkOc
Regards, Hung PD
