Navigate in the WeGive Dashboard to the All Supporters table.

Next Click the filter button, and implement an Impact Story filter, searching for and selecting the Impact Story from which you would like to remove supporters from.

Click set filters, and your table will now display all supporters who are tagged in that Impact Story. Feel free to add more filters to narrow down your selection of supporters even more. Once all your filters are applied, select the supporters you would like to remove, either by selecting individually, the entire page, or all results and click the button in the top right to remove those supporters.

If the data in the confirmation looks right to you, click confirm, and your supporters will be immediately removed from your Impact Story.