Employee replication from HRM to SAP CRM

Hi All,

we want to replicate employee from HRM to CRM with  below functionality/requirement.

1.We have an existing number range for employee in both the system ex:01 (which is working fine).

2.Now business want to incorporate/create  2 new groups of employee in HRM with two new number ranges ex:02 & 03.

So my question is how we are going to incorporate the 2 employee group into our SAP CRM system along with the number ranges.