I am trying to make columns that have one unique option.
First check this image: https://i.imgur.com/uxwX57G.png
Like you can see there is the option to take the circle icon in the DDL.
But I want it only to be possible at 1 cell per column.
example: the circle icon is selected at the first row cell. When I select the circle icon in the third row. The first row cell gets empty.
Thanks for reading,
hope you can help me.