Powerstore will support categories but it does not currently support sub categories, like the manufacturers. To get it to list the category, manufacturer, then product would require a bit of editing with the tools you own and some hand coding also. This is not a simple task but it can be done. I do not have any example of this for you. If you think this is something you would like to try I can list some high level steps for you:
Start by adding in a productsubcategory table, make it like the current productcategory table but add in a column for the category.
Next modify the products table to include this subcategory column.
Make a set of pages to admin the subcategories with DataAssist, you must ensure that you associate the subcategory with the main category.
Next modify the product insert and update pages to include a select list for this new subcategory.
Once subcategory is working on the backend update the front end to make use of the subcategory. This will at least require changing the code on the CSSMenuWriter>intermediate.php page to loop through the subcategories within the loop for the main category.
You will also need to adjust recordsets throughout the front end to include the subcategory column. You will need to join the subcategory table in with the product table.
If you need to record this in the cart you will need to add a new cart column, update the cart display page, and the checkout server behaviors that would need to have this value included.
This is a very high level overview of the process and it may not be complete as I have not gone through it myself. If you have any question about any part of this post back and we can help explain it further.
