FIRST
Select your Projects storage
This is the space available to use for all your active projects
THEN
Select your People gallery storage
This is the space available for your database of profiles
*: This is an estimation of the number of profiles you could have in your gallery supposing their average size is 50MB.
You can upgrade your storages at any moment according to your needs. If you need to upgrade mid-cycle, you will only pay the difference between the storage you already had and the one you upgraded to. You can also downgrade your storage anytime so the following month you will be billed automatically with the one you downgraded to.