on kickstart you cut down to either 18 or 22 points per day, depending on what you have now (if you have 22 now, cut to 18, any higher, cut to 22) you can save points but they will be extras, so if you do kickstart and want to save points, you will have to have less than 21.
If youre 14 stone or under you have 18 points. Over 14 stone you have 22. If youre doing KS you should eat all the KS allowance points and not save any, as youve already cut back