For more details see the Custom Stock Status extension page.
Use catchy stock statuses to engage your customers more and increase conversions.
To create a new custom stock status or edit the existing one:
Go to Catalog → Attributes → Manage Attributes and open attribute Custom Stock Status Qty Rule.
At the Manage Label / Options tab, create one rule for each product group, for which you will use different levels of stock. E.g. electronics_rule and books_rule.
Go to Admin Panel → Catalog → Manage Products and select the desired product to configure custom stock status it.
Custom Stock Status - edit the product(s), for which you need to use the custom stock status and choose the appropriate status at the General tab.
Hide Default Stock Status:
Use Quantity Ranges based Stock status - If quantity based statuses are used, the status will change based on available quantity. If there’s no such range (e.g. you have 1000 items and the biggest range is 50-100), manually indicated status will be displayed.
Custom Stock Status Qty Rule - Use Custom Stock Status Qty Rule setting to choose which quantity rule should apply to this product.
To configure Custom Stock Status extension, go to Admin Panel → System → Configuration → Amasty Extensions → Custom Stock Status.
Display Custom Stock Status for out-of-stock items only - It is possible to display custom stock statuses only for “out of stock” products.
Allow for Customer Group - You can display custom stock status for particular customer groups only. Use multiselect to specify the groups you want to display stock status to.
Use Quantity Ranges Based Statuses Only - If you would like to use only automatic, range based statuses, set this option to Yes.
Display Icons Only - To display only icons for stock statuses (without text), set this option to Yes.
Use Status Icon Title Text field to specify the text that will be displayed when customers hover mouse over a status icon (you can leave it empty).