You can adjust the setting to enable or disable clients to change their assigned workout date. This setting applies globally to all of your clients.
To access, click Account > Settings > Client Settings > Then toggle on/off
If the setting is toggled on, clients will be able to move their workout to any date they desire. Enabling this setting is great for clients who may have an unpredictable schedule and might not be able to do a workout on the date that it's assigned.
If the setting is toggled off, clients will not be able to change the date of their assigned workout.