Is there a way to select a group of generic tokens in Roll20, have them roll initiative, and have these values added to the turn tracker? The following command does it for one selected token:
[[1d20 + ?{Modifier|0} &{tracker}]]
--given that the tokens are generic, the command asks for a (Dex) modifier. Is there a way to extend this command to a group?
The &{tracker} syntax to automatically roll a token into the turn tracker does not work for multiple selected tokens. As you've discovered, only one of the selected tokens will be added.
Your only options are to roll each token separately (which shouldn't take too long if you've got a macro set up), or use the API, which can easily add multiple objects to the turn tracker at once (including rolling their initiative). Unfortunately, the API requires that the campaign owner has a Mentor subscription.
It seems that you have to be a Mentor to do this: you can find the relevant script discussed here and available for download here (or at the top of the discussion, in the previous link).
The discussion in the first link includes tips and comments for adapting the script to other systems.
