1. Open Community Workspaces orCommunity Management.
2. If you’re using Community Workspaces, access Topics by clicking Content Targeting | Topics | Featured Topics. If you’re using Community Management, access Topics by clicking Topics | Featured Topics.
3. Enter the first few letters of the topic name in the search box. Select a suggested topic and click Add. Use navigational or member-created topics.Tip Using the Chatter REST API, you can create unique featured topics,separate from navigational or member-created ones.
4. Hover over a topic name, and click . Then click Upload thumbnail image, and select an image that represents the featured topic on the community home page.(Thumbnail images are scaled to 250 x 250 pixels. To prevent distortion, create imagefiles with those dimensions.)
5. Repeat steps 3 and 4 to create several featured topics for your community, up to a maximum of 25. Then click Save.