If you would like to try out the features in Pandle Pro you can upgrade from within your account by changing your plan.
To do this, go to Company Subscription:
You can then click 'Change Plan' before selecting the Pandle Pro plan to upgrade.
Please note: After doing this you will still need to enable your Pro features in your Company Settings menu so that these appear in your Pandle account.
You can learn how to do this here.