Hello,
I have a sheet in which I created a gantt with activities, I have established the dependencies, that same sheet will be used for multiple projects by my co-workers, in which they only need to modify the dates but so that the dependencies are not eliminated I have left it configured some simulated dates, but now that my colleagues have begun to fill in real data, I need them not to confuse the dates that I have left configured with the ones that they are going to set, I would like that as they fill in the dates, they are colored in any color so that my colleagues identify that the highlighted dates are the ones they are recently placing and the dates that are blank are the ones I left.
I already tried it with the conditionals but they modify the rows but not the columns. I would appreciate if someone help me please!