How to set up state reciprocity?

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We are trying to set up an employee that would have 2 state tax withholding.  We have set up the 2 states with proper exemptions and also set up the state reciprocity between the 2 states.  But when we go to do a payroll check, it is only withholding for one state.  Does anyone have this working in SAGE 300CRE.   We are on version 15.1.  Also, is there any documentation?  I have looked at KB and found nothing.  Thanks.