Click on Approvals in main menu or from the command list, list of options will be sent to you by COCO, find Approve Leave in the list and click on it. This will display you a card with leaves of your subordinate’s, click on the leave that you want to take an action on and just click the Approve or Reject button.
Directly type in “Approve leave” and the bot will respond you with the list of your subordinate’s leaves without any navigation.