The wedding case study project management

I’m stuck on a Management question and need an explanation.

First document is case study with questions. Second document is just an example of network diagram. BElow youtube link is helpful material for creating gantt chart.

Part 1 This is an open-ended case study that you will continue to build upon. Use your creativity in completing all the assignment problems on this case study. You may want to use productivity software (such as MS Excel) for this and subsequent case studies. a. Develop a work breakdown structure. Here is an example that you can use (or modify, or create your own) Start 1. Guest Management 1.1 Create List 1.2 Send Invitation 2. Resources and Tasks Management 2.1 Finalize Budget 2.1.1 Church Reservation 2.1.2. Party Hall Reservation 2.1.2.1 Party Entertainment 2.1.2.2 Hall Decoration 2.2.2.3 Food and Drinks 2.1.3 Shopping 2.1.3.1 Rings 2.1.3.2 Dresses End b. Make a list of the specific activities that need to be done between now and the wedding day. c. For each activity, identify the person (Tony, Peggy Sue, etc.) who will be responsible for seeing that the activity is accomplished. d. Create a network diagram that shows the sequence and dependent relationships of all the activities. Part 2 a. Develop an estimated duration for each activity. b. Using a project start time of 0 (or January 1) and a required project completion time of 180 days (or June 30), calculate the ES, EF, LS, and LF times and total slack for each activity. If your calculations result in a project schedule with negative total slack, revise the project scope, activity estimated durations, and/or sequence or dependent relationships among activities to arrive at an acceptable baseline schedule for completing the project within 180 days (or by June 30). Describe the revisions you made. c. Determine the critical path and identify the activities that make up the critical path. d. Produce a bar chart (Gantt Chart) based on the ES and EF times from the schedule in item 2. Church Booking (1) * Start Budget (2) Invitation (3) Party Location (4) Wedding Dress (5) Catering (6) Entertainment (7) Dance Rehearsal (8) End ...