How to create Groups in UME instead of LDAP(AD) when use writeable AD

Hi experts,

Our portal user UME are now connected to AD LDAP with dataSourceConfiguration_ads_writeable_db.xml (enabled SSL). So when creating user and groups in portal, it is created in AD, but if I want create groups in UME, how it can be done? Any help? Urgent! Tks!