There is no actual KB article for that, so just a clarification there. For the KSMA (K1000) it would see your mail server as two independent servers so one is O365 and another one is going to be your Local Exchange 2013 (I assume), so to put it simple just do the following:
But that is not enough so add this....
In some special situation this is needed
*NOTE: if you are using O365, every single queue and the network settings needs independent email account!!!!
and that's it...
Questions? let me know