Several doubts of addons
Is possible to a customer to apply for an addon no at the same time as the subscription and how many times is allow to do this because in your documentation is an option of "One time addon" ?
In my personal case I have 3 different situations and I am not sure is the addon is the best solution.
Case : The customer is already suscribed on a plan but I want to offer him based on the use the option to:
1. Add more users to the plan (the original sets a user limit) so in this case for an extra charge He can add 1 or more users
2. Add more "projects" to the plan, same case He or She will be able to buy and add extra projects capability to the system
3. Add more Disk Space
This is because I think this possibilities
* This extras could be treated as a Product, but is posible for a Client to suscribe to several products?
* Also is possible for a Customer to suscribe two times for the same product?
I hope you can help me on this