You can edit the answers of your check-in until your manager has read them.
To edit your check-in, simply click on the Edit button of your workspace:
Your manager will not receive email notifications when check-in is edited.
One your manager has read your check-in, a read notification will appear at the right corner of the check-in card. You will no longer be able to edit your check-in. Nevertheless you can comment your own answers to share additional elements.