What do you want to find out?
How many users can log in to the shared dashboard at once? How many users can I add to my account?
There is no limit on how many users can access the shared dashboard, regardless of the number of subscribed vehicles.
The shared dashboard can be used by all users added to the account at the same time. However, you should ensure that two users do not enter data into one vehicle’s monthly mileage log simultaneously, to avoid duplication and data mixing.