We use European-style chains with varying calibers and different delays between the shells of different calibers. Can we do that in Finale?
Yes you can make chains with varying shell calibers and delays between the shells. It is very easy, actually. Just layout all the shells of whatever calibers you want on the timeline with the correct delays between them, then select them all, then do the command “Edit > Make chain”, which combines them all into a single ignitable item taking one pin on your firing system.