It always helps to have a joint holder for your financial investments—be it your bank account, demat account or mutual fund investments. And given that most transactions can be done online, the joint holders need not even be based in the same location.
But on one aspect, that is, updating nomination details, jointly-held investments can entail the involvement of all the joint holders. And while this may not necessarily require them to be based in the same location, some coordination may be required between them to get certain things done.