By right clicking on the accessory in the Detail View you can gain access to the "Install" or "Remove/Move" menu items. Selecting these menus brings up the "Remove Accessory" dialog box shown below:
First enter the date that this procedure took place. The default date will be todays date. Make sure you change this to the actual date of the change. Failure to do this could cause the accessories history records to become incorrect.
If the accessory to be installed is currently unused the Remove accessory option will be disabled. In this case select the aircraft you would to install this accessory in to.
If the accessory is currently used you can either remove it (it will then be an unused accessory) or move it to another aircraft.
Click OK to save changes made or press Cancel to abort.