Currently to put a review on for your sitters they need to send you an invitation to review them. Ask them to send you the invitation from the 'Reviews' section of their Mindahome profile. They will need your email address if they don't already have it. The invitation will appear as a message in the conversation you have had with them on your 'Messages' page in your Mindahome control panel. It will also have a link for you to click to go to the review form. There is information about this process on both your 'How to' pages in you Mindahome control panels.