To set GMN, go to Settings/Number generation rules/GMN.
In the appearing page you can set the content of identifier from Optional items (e.g. Year/Edition year, SequenceNumber, Constant etc.) by pressing right mouse button and dragging selected element into the field in right side.
The maximum length of the CompanyPrefix is constant, fixed (25 characters), but the components and their length can be set within it. You can save the rule (Save button) and test it (Test generation button).
