If your intelligentcontract subscription is with either our Free or Team plans then you will see references to [Upgrade] in the account as you use it.
These upgrade buttons identify features that can be available if you upgrade your account to another plan.
Fig 1 - Upgrade buttons
Click on any of the [Upgrade] buttons and you will be presented with a screen detailing which plan your are currently using and which Plans you can upgrade to.
Click on the [Upgrade to this Plan] button and you will be taken through the checkout process to upgrade your account.
Fig 2 - Plan Review
If you upgrade you account from Free to Team then there will still be upgrade options for features available in the Professional Plan, use the Review Full Plan Comparison link on the screen to review the full list of features available per plan.