I think, I’m pretty sure, one of the if not only ways to get a ‘Shared Copy’, is to use the ‘Repeat’ command, which sort of only applies to one situational workflow scenario of duplicate-looping an event successively. That leaves out a lot of scenarios.
There needs to be some other methods.
-‘Paste as Shared Copy’ initiates the event(s) being pasted as well as the original events being copied from, as now shared.
-Initiate Parent Copy allows a user to select one or a group of events, and assign them all as Parents, in which any copy or duplication of them thereafter, will be a shared copy.