Owner needs to select the team
To subscribe, make sure you're the owner of the Trello Team.
Then, log in on http://elegantt.com/account.
In the "Plan" section, you can select the team you want to subscribe with:
Owner needs to select a number of slots (or "subscriptions")
Once it's done, select if you want to be billed monthly or annually and for how many slots (aka "subscription").
You need to buy one slot per user in your team. For example, if you have 2 team members (including yourself), you'll need to get 2 slots:
Adding members with the monthly and annual plans
If you choose the monthly plan, your Trello team members will automatically be added to your subscription when they start using Elegantt.
If you chose an annual plan, you will receive an invitation request each time a new user tries to use Elegantt on one of your team's boards. You can then accept the request and we will charge you the pro-rated amount for a yearly subscription for this new team member.
More information at http://elegantt.com/pricing