This may work with a small network, or if your using one account to all your hamachi instalations, but if you have one different account for each logmein instalation it won´t work.
It shoudn´t be so hard to make this feature work. It seems to be an old issue and so far I rarely see anyone from the logmein support to answer the forum´s question.
If it wasn´t for the community to help each other this forum would be dead.