Only the organization owner can upgrade or downgrade the subscription plan, and can add or remove users from a given organization. If you are the owner of your organization, you can update the subscription plan from your organization account.
When you are on the subscription plan page, you will be able you choose the desired plan using the slider and/or change the number of users before you click the Update button.
A modal window will display to confirm the new plan.
If the new plan is more expensive than your current plan, the new plan will take effect immediately. For the first period of your new plan, BigML will charge you the difference between the new plan price and the prorated value of the previous plan that you did not use. For example, imagine you bought a Boosted plan with 4 additional users for a total price of $630/month on the 1st of January. On the 15th of January, you upgrade your subscription to a PRO plan with the same number of users for a total price of $1,300/month. BigML will charge you $1,300 − (0.5 x $630) = $985 instead of the $1,300 for the first month of your new PRO plan. On the other hand, if the new plan is cheaper than your current plan, the new plan will take effect when the current plan billing period ends. You can always cancel the new plan and reset the current one.
For more details, please read the Managing the Organization Account chapter of the organizations Dashboard documentation.