Hello,
To change the start of week you must contact us so we can change it on our end. You can email the request to customersuccess@altametrics.com or us the in app support to send in a support ticket. Please include the current start of week, what you would like it changed to, and the owners login email address. Also please note that by changing the start of week all past, present and future schedules will be lost, we recommend that you print out any future weeks schedules before you send in the request.