If you have selected Single mode, the saving and tasks options will be displayed.
Click to open the Measurement->Saving Defaults… dialog.
Click to open the Measurement->Tasks... dialog.
Select one of the methods shown below for saving
Save the measurement using File->Save As....
If this is selected you will be asked before performing a measurement whether you wish to save the previous measurement or not.
If this is selected you will be asked after performing a measurement whether you wish to save the previous measurement or not.
If this is selected the measurement will automatically be saved. The filename and other parameters are taken from Measurement->Saving Defaults….