Can you clarify what you mean by "you need to access the department in the Products list widget?" If you need to add the Department field to the Products Details page then you can go to the Products List widget >> Edit >> Single Item settings >> Edit template for Products Details and drag on the Department field onto the
template or add the code from the code sample below.
Also if you need to access the department through code, you can use the code snippet below and don't forget to include the Telerik.Sitefinity.Model reference at the top of the code.
Please let us know if you have anymore questions.
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items