I need help to find a solver goal for this budget.

Use the NET Profit value for December $($cell G$20)$ and calculate your objective value for improved December result. The increase $\%$ for your group is in column G $($see Table $2$ Group Assignment above$).$ Store the desired value in cell D$30.$

Use Excel Solver to manipulate projected growth per month $($cells C$24$:C$29)$ to achieve the December goal calculated and stored in cell D$30.$