look for setting UIBuilder with overrided method buildGroup like this:
X++:
class YOURCLASSNAME extends SysOperationAutomaticUIBuilder
{
protected void buildGroup(SysOperationGroupInfo groupInfo, FormBuildGroupControl groupControl)
{
super(groupInfo, groupControl);
if (groupControl.name() == 'YOURGROUPNAME')
{
groupControl.columns(2);
}
}
}
X++:
[
DataContract,
SysOperationGroupAttribute('YOURGROUPNAME', "@SYS0000", '1')
]
class YOURCONTRACTCLASS
{