Hi Dawn -
1. I can't think of any way to use the Possible Values field in the editable table to pull
only the unique values using a non unique list.
One possible solution is to create a reference backing table for the editable table that contains this information in the format you want it in (a pipeline step to remove duplicates). I would then use the following formula in the "Possible Values" field of the editable table column: %
MyNewTable/!LIMIT_COLUMNS[
MyUniqueColumn]
2. I think I need more background information on this one. But I will assume the goal is for users to enter a forecast volume for each month. If that is the case, I would create a column for each month in the editable table.
#ApptioforAll