Demantra Create series to editable to one user group and non-editable to another user group

Hi,

We have a requirement in Demantra 12.2.9 to create bulk of series which is editable to one user group but not editable to another user group. So want to know how to achieve the following:

1) How to make a series which is editable to one user group/worksheet but not editable to another user group or worksheet.?

2) Is there any API to create series programatically?

3) Is there any API to add userid to a user group programatically?

Regards,

Rajesh