Enable Sidebar Category Filter
To get started, navigate to Catalog > Categories, click Edit for a category you wish to add sidebar filters.
On Edit page, click on Settings tab and toggle ON “Display sidebar categories filter” button.
Now, you should assign appropriate filters to your category. For this, click Filter Settings tab on the same page and tick relevant checkboxes. You may select their order of appearance as well.
Finally, click Apply to save these settings to show filters on the sidebar of your category page.
Please note that these settings need to be applied for your B2C category as well.
To assign filters to multiple category in one go, use export/import filters feature.
Go to Catalog > Categories and select the categories.
Click Tools and choose “Export Filters”.
Set “Y” for the filters for each category in the downloaded file and import the file back by choosing Tools > Import Filters.