Develop a spreadsheet model to address the followinng scenario. Along eith coming up with an analytically$-$substantiated response, the premium here is to develop a clear and concise spreadsheet model that contains relevant information.

Barbara Perry has been put in charge of planning her company's annual leadership conference. The dates of the conference have been determined bu her company's executive team. The table below contains information about the activities, predecessors, and activity times $($in days$).$ Develop a spreadsheet model for finding the project completion time and critical path.