Hi @Thom89
Please refer to the screenshot below. Using the expression below:
ClearCollect(DropdownCollection,Distinct(TabelaFormulário,'Primeira Página'),Distinct(["Germany","France"],Value));
Excel Table Name: TabelaFormulário
Excel column: 'Primeira Página'

To add values in dropdown other than the ones retrieved from the excel, you can create a collection and use the same collection in dropdown "items".
This collection can be created either on page visible or some control action.
Note: Please make sure that when you are creating collection, all the different arrays need to be filtered out as results using the Distinct Function(like I have used in my formula), otherwise it will store the values in different column.
Hope this Helps!
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