You mean, you would like a schedule to be able to display all values used by a given item?
For example, in Revision History objects (it is a GDL Object, not a Schedule, I know) the simple layout will list 1 revision by row, and in one cell it will list all Changes that belong to that Revision, for example: "Ch-01, Ch-03, Ch-05".
Such a feature would be useful.
....................................................................................................
Get Archicad Tips at https://twitter.com/laszlonagy
AMD Ryzen 1700X CPU, 48 GB RAM, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), WIN10 PRO ENG, AC20-AC26
Loving Archicad since 1995