Dash DataTable Dropdowns by Row

This seems like something that should have already been answered, but I’ve searched the depths of the internet without any luck. Say I have a dash Data Table with two columns. In the second column, i want to have dropdowns for ONLY CERTAIN ROWS. I can do it by index, I can do it by value in the first column, I just need to know how to do it. Everything I’ve tried results in dropdowns in the rows I’ve designated in dropdown_conditional, and the other rows are now uneditable. PLEASE HELP.