Answer:
1.Turn on the Recording tab of the ribbon: On the File tab of the ribbon, click Options. In the Options dialog box, click the Customize Ribbon tab on the left. Then, in the right-hand box that lists the available ribbon tabs, select the Recording check box. Click OK.
2.To get ready to record, select Record Slide Show on either the Recording tab or the Slide Show tab of the ribbon.
Clicking the upper half of the button starts you on the current slide.
Clicking the lower half of the button gives you the option to start from the beginning or from the current slide.(The Clear command deletes narrations or timings, so be careful when you use it. Clear is grayed out unless you have previously recorded some slides.)The slide show opens in the Recording window (which looks similar to Presenter view), with buttons at the top left for starting, pausing, and stopping the recording. Click the round, red button (or press R on your keyboard) when you are ready to start the recording. A three-second countdown ensues, then the recording begins.
