Which feature is available to partner users when leads are enabled in a community?

When leads are enabled in a community for partner users, one of the key features available to them is the ability to import leads from external sources. This functionality facilitates partner users in directly sourcing leads that may not have originated within the Salesforce environment, thereby enhancing their ability to manage and track potential sales opportunities more effectively.

By allowing partner users to import leads, organizations can streamline the lead generation process, making it more efficient and comprehensive. This not only aids in better tracking and conversion but also empowers partner users to leverage external data sources to increase their prospects.

In contrast, other options such as creating personal contacts, editing case comments, and managing user licenses do not specifically relate to the lead management capabilities afforded to partner users within the context of community environments. These functionalities serve different purposes within Salesforce, like contact management and cases, rather than the direct management of leads which is the focus of the question.