In order to manage sheet split process you need to take into
boolean bindable property available for any control, allows you to signal that
we want to start a new group beginning from the current element location in the
string bindable property determines a group name.
it’s not clear what the first group name is, we can use DefaultGroupName string document property to define the first group
Now we can perform Excel export with Split sheets by groups option specified:
And have sheets as they were defined in the template: