Issuance Transactions:

When viewing an Issuance Transaction, edit the Price per share field. The related Certificate will automatically update to reflect your changes.

Certificate Codes:

When viewing a Certificate, the Certificate Code details and sort order can be edited.

Holdings:

You can edit/remove a representative or add a new representative for a holding. You can also change the name of a holding - with the bonus of when you do, all linked transactions will be updated accordingly.