if you look at cell J11, you will see the legend. Any yellow shaded cell is designed to be adjusted by the operator. (At some point, I'll protect the worksheet a little better). So, you can adjust your macro ratios in cells OPQ3.
If you enter any values in total that do not add up to 100%, you'll see my little surprise and the input will be blocked until it does add up to 100%.
Now, about the fat as opposed to weight loss.
Ideally, you can manipulate your BF% either through caloric restriction and/or cardio. If you do NOT want to lose weight, then go the cardio route, but you will have to increase your caloric intake to compensate for the increased activity levels. Your activity level is controlled at cell C30.
No matter which route you take, make damn sure you maintain adequate protein levels.
The minimum requirement would be at cell K7, but optimally would be at cell O7.
To adjust your caloric intake above/below TDEE, you do so at cell O5. Negative to cut, positive to bulk, else leave it at zero to maintain.
Any other questions?
---Roman