I have written an issue related with entering tax rates of products. I tried to solve this issue by creating product categories for each tax rate. And when I upload a new product, I choose two categories, the category of the product and the tax rate category. Then I will choose the tax rate categories in tax pages. This solves the issue. But the problem is I do not want these tax rate categories published on the front side. When I unpublesh these tax rate categories, then I cannot access them when choosing product category. How can we solve this issue?