Noticing how many labs use Indico these days, I had in idea. Quite often, events are relevant to more than one lab, so I thought it would be neat if I could “Add an external event” to my Indico instance easily. If this would also allow the organiser to pick speakers from user accounts on either instance, limit access to user groups from either instance etc, that would be a big plus (but as I have limited technical knowledge I can imagine this part being hard to implement). This way it shows up for anyone subscribing to the category calendar on either instance, it can be browsed in one place, it is easier to keep track of the history of relevant events at a given lab etc.
Is something like this already possible perhaps?