The configuration tab is only visible to users with Administrative privileges
PLEASE NOTE: If you do not completely understand how a setting works, please contact customer support before changing ANY setting. Thank you.
Once in the configuration menu, click Settings to the left.
Click the Features tab.
Find "Pre-Authorization Module".
Click the black toggle switch so that "On" is showing. (Black bar is to the right)
In the field below, enter the amount you want to be pre-authorized by default.
Setting will be saved automatically.