Final answer:
The 'Envelopes & Labels' feature in Microsoft Word is found under the 'Mailings' tab, which is used for all mail-related tasks including creating and printing envelopes and labels.
Step-by-step explanation:
To access Envelopes & Labels in Microsoft Word, you need to navigate to the Mailings tab. This tab contains all the features you would need to manage mail-related tasks such as creating envelopes, labels, and performing mail merge operations. Within the Mailings tab, you can find the Envelopes and Labels options easily accessible, typically under the 'Create' group of this tab, where you can begin formatting and printing envelopes and labels for your documents.