Is there a way to show minute-long tasks for event choreography on a Gantt chart?
ProjectLibre is my preferred Gantt tool, and I've not discovered a way to change the display to minutes, but tasks appear with the smallest measurement of "hours".
Alternative #1 is to create 2 Gantt displays, one to show the complete timeframe (planning, practice & publicity), and the other which isolates the event (e.g. performance of school play).
Alternative #2 would be something like a logarithmic Gantt, compressing the far distant items, and expanding the critical hour at the end. Think of a wedding...planned for months, and focused on the day, or even hour (ceremony & reception).