Well, that is really up to you. The answer is whenever you need them. If you have a question or need help, you should contact them for quick support.
However, that does not mean you shouldn't try to find the answer yourself first. If you cannot find a clarification on your problem even after your search, then you should contact your sponsor or co-sponsor for help. This way you will learn to find valuable information yourself, and not only rely upon your sponsor and/or co-sponsor.
Well, that is really up to you. The answer is whenever you need them. If you have a question or need help, you should contact them for quick support.
However, that does not mean you shouldn't try to find the answer yourself first. If you cannot find a clarification on your problem even after your search, then you should contact your sponsor or co-sponsor for help. This way you will learn to find valuable information yourself, and not only rely upon your sponsor and/or co-sponsor.