To allow site users to tag site content with custom tags or member-created topics, you need to enable two permissions for site users in Setup:
Create Topics. This permission allows users to create new topics and assign them to content, such as posts, files, or articles. Users can also edit or delete the topics they created.
Member Can Access Topics. This permission allows users to access the topic management features on the site, such as viewing, following, or unfollowing topics. Users can also see the topics assigned to content and filter content by topics.

A recommended approach for implementing gamification is to use the Missions feature to assign badges to members automatically. Missions are a feature that allows you to create challenges and rewards for your site members based on their actions and behaviors. You can use Missions to define criteria and actions that trigger badges, points, or ranks for your members. For example, you can create a Mission that awards a badge to a member who posts a question, comments on an answer, or likes a post.

To access Experience Cloud sites, CK's employees should use the Salesforce Unlimited user license. This license allows employees to access Salesforce and Experience Cloud sites with the same login and credentials. It also provides unlimited custom objects, tabs, and apps, as well as enhanced storage and support. The Salesforce Unlimited user license is the most comprehensive and flexible license for Salesforce users.

To add partners and internal users to the customer Experience site, the recommended way is to enable the partner accounts and the internal accounts as customers; the users under these accounts will then automatically gain access to the customer site. A customer account is an account that has the Is Customer checkbox enabled. This indicates that the account is part of your customer network and can access your customer Experience site. To enable an existing account as a customer, you need to edit the account record and check the Is Customer checkbox. This will automatically grant access to the customer site to all the users under that account, without creating new user records or profiles.

One thing that NTO should consider when building the HR help desk app is that the app can centralize knowledge and self service in to one experience site. This means that NTO can use Experience Cloud to create a site that provides access to Knowledge articles, Cases, Chatter, and other features that can help its employees find answers, request assistance, and collaborate with HR staff. NTO can use Employee Cloud, which is a solution that allows NTO to create employee experience sites using Experience Cloud.