If by "localized groups" you are referring to the groups for different languages, you can promote the groups in different ways:
- Enable "Groups You Might Like" from Admin Panel> Setting> Feed.
- You can promote it in the announcement section12. You can also add an action button to the announcement that takes users to the Groups page.
- You can create a post and introduce your groups in that post. You can then pin the post to the top of the homepage to give it more visibility.
- You can add the description section to each group and ask members to click on the "join group" button in order to be able to see the posts from the group right on their homepage as well. (How we generate homepage based on groups you join11).