Using command line
You can issue the command provided here to enable or disable replication conflict resolution for group members.
About this task
ldapmodify -h <ldaphost> -p <ldap port> -D <bindDN> -w <password> -f <file>
where file contains:
dn:cn=Replication, cn=Configuration
changetype: modify
replace: ibm-slapdEnableConflictResolutionForGroups
ibm-slapdEnableConflictResolutionForGroups: <value to be set as either TRUE or FALSE>