Sorry, I’m just getting to this now.

To answer your question, yes, this is a feature of the Windows-based, on-premises version of Spiceworks Inventory and Help Desk, aka Spiceworks Desktop. It does/did have many more features than the Cloud Help Desk, especially the customizable user portal.

For your particular case, you can still use KB articles that had been written and used in the legacy version of the help desk. Linking no longer happens, but rather, a copy of the text is inserted in your response to the user. While a KB article may include pictures and such, the CHD copied response will not.

If you absolutely need the feature, you can download the Spiceworks legacy version for a few more days from Spiceworks Inventory Software: Help & Support - Spiceworks . Do note that it will not be supported by the end of the year due to other limitations, so “buyer beware” will apply. See What’s going on with Spiceworks Tools & Apps in 2021? for an explanation.