I was trying to do rollup fields to find the most recent of an array and there were too many form collisions at the minute level. Unfortunately creating a string output (with seconds) with this information is not helpful, because then you'd need to r...
This is an old thread, but the top hit for a related question I had. I think it would be easier having multiple gantt views, identically configured, but filter rows to those involving that target person/team etc.
The cleanest way to do this is to have a separate column for each and if you want to see them concatenated, use a formula field to do so. You can then hide the source columns. From a form input perspective, I would recommend using fillout.com integra...