Only owner of an objective can update its status.
It's important to update the status and progress of your objective regularly. It's recommended to do it on a weekly or bi-weekly basis. You should also put a text comment or upload an image to provide a visual update.
By default, an objective progress status (on track, at risk or behind) is automatically calculated based on its overall progress. However, in certain cases, you want to override this, follow the below steps to set it manually.
Go to the detail of an objective
Click on the update status
Choose the desired status and it's good to put a comment to give everyone more details on what is the latest update.
There are multiple ways you can update the progress of your objective or key results. It could be done from the objective listing page or from the detail page of your objective.