Unfortunately, users often ask repetitive questions or open new topics because they were too lazy to search the forum for existing information before posting. In this case, moderators need to move posts into an existing topic.
To do that, proceed as follows:
1.) Go to the new post and select "Moderator Control Panel".
2.) Click "Select topic".
3.) Choose the destination forum and topic (where to move the post(s)).
4.) Choose, which posts you want to join to the new topic.
5.) Select "Move posts" and click "Submit".
6.) In the new topic, post a new post, indicating that you moved posts in there, from where the posts where moved and why.