Anil,
We are still figuring all of this out, and really not much different than when we were all on paper.
We have one pediatrician and one pulmonologist who we do not share call with.
The rest of us are internists or FP's who take a week at a time night time phone call for each other, except one who still does hospital stuff and takes his own call all the time--the one who has eCW. So it is a bit complex.
When we are gone on vacation, our nurse has access to our records, so will go to the doc on call to handle questions. The nurse will document and take care of each situation, and may print up by paper or send thru updox the most recent med list or note to show to the covering doc. We really do not cross cover much so we are really like a bunch of solo docs. I often will remote in every day or two when I am gone to take care of scripts and keep the workload to a minimum when I get back from vacation, and most of my partners do this as well.
I think the individual EHR pod works the best too, because if I want to do an upgrade and Dr X or Z does not, or do my back up a certain way, I can without having to get a consensus to do the everyday charting the way I want.
This system works for our type of individual practices and not a lot different than how we ran things on paper.
I believe you can designate different users on AC but if you are an MD, I think only one user in that category per license, but your other users are designated as nursing or front office types. I am not sure how to handle a NP or PA however.
I hope this helps.