Hi,
1. There should be a filter button unless you turned it off in the HikaShop filter module settings.
2. Sure. Create a category filter via the menu Display>Filters and select it in your HikaShop filter module.
3. That's what it should do by default.
4. The search box has no width fixed. So it must be fixed by the CSS of your template.
1. yup there is a filter button but no search button. how can i add a search button or a search logo?
2. the filter button is always outside the field set even if i configure it inside, i already change it to the default template and still same. how to mode its location?