Hi Herman,
there should be an option inside the single column configuration inside the table widget settings.
Follow those steps:
- Enter the edit mode
- Select the table widget you are interested in
- Inside the columns tab click on the settings of the column you want to change format to. (the brush icon)
- You should see a picture similar to the one attached. Select a format from the available ones from the Format combobox.
If you cannot see the format select is possible that the column is an attribute and not a measure.
Let me know if you can make it work.
Regards.