There are several User Permissions related to Edit Transactions.
Go to the Gear (icon) > Settings > Manage Users & Permissions > User IDs (click on a UserID) > User Permissions (left) to set the permissions. Note: If a User is logged in when changes are made to their permissions, they'll need to log out and then back in before the changes will take effect.
These are the permissions related to editing transactions:
|Transactions||Edit Payment Amount|
Edit Original Fee
Edit Payment Transaction Date
Mass Edit Transactions
|Reports||Transactions Advanced Search|
See Permissions for Jackrabbit Users for more information.