We are working on the ability for you to manually add all your games. Until then our support team is happy to add any game, or DLC to your account. Simply send a list of your games you want to be added to your account to email@example.com.
Games need to have a Steam store page before we can add them to your account. However, games do not have to be released yet. DLC is also fully supported. It is also possible to add games from other developers to your account. This is useful if you are a publisher and publish games using multiple Steamworks accounts. Please let us know if this is the case and we will sort everything out.
Adding additional users to your account is possible. Please send a message to our support team with the name and email of the user and we’ll add them asap.