The termination function can be found in front of every transaction under the three-dots button.

To find transactions – go to the 'Transactions' section in the 'Securities' block in the menu on the left. Find or filter the transaction and confirm needed changes.

OR in the Grant view under 'More' button.

To find Grant, you just need to go to the 'Grants' section in the 'Securities' block in the menu on the left.