Open the reservation you wish to modify then click the config cog beside the reservation # then select Change Unit/Dates to continue.
On this screen you have the option to change the dates of the reservation, update the rates/charges for the change, and apply an existing discount to the new dates. If you only wish to change units no change is needed on this page. Click Next to continue.
On the Units section you will have a drop down list of the units available to be moved to. Select the desired unit to move the reservation to and click Next to continue.
You will now see a confirmation screen for you to confirm the changes you have made on this reservation. If you want to modify any changes simply click the back button to return to the setting you wish to update. Once everything looks in order click Finish to complete the change of dates/unit.