Microsoft Project - Duration, Work, Units?

[emloy4it]

I have an issue with duration and work of tasks. I hope someone can help.

I am a supplier company working with an external client. I need to create a template for projects. Our project should display the waiting time for a supplier to respond, and the time it takes for me to complete tasks. We need this for costing. I have a project with the following tasks:
Task A – 20 days
Task B – 15 days
Task C – 10 days

Each of these tasks starts consequently and has a Resource A assigned to it. Task A only takes 1 hour of my time to complete. However I have to wait the remaining time (20 days minus 1 hour) from a Client to respond and complete Task A. Similar Task B only takes 4 hours of my time and Task C only takes 5 hours, and I have to wait 15 days minus 4 hours for Task B to be completed and 10 days minus 5 hours for Task C to be completed.

I’ve tried to create it by displaying Task A as 1 hour, Task B – 4 hours, Task C – 5 hours, and then use lag time. However it creates such a mess when adapting a template to a particular project.
Please help and advise what I shall do.

[IRVING]

What if I separate the tasks into two, like this:

1. Task A(i) - your task
2. Task A(ii) - supplier responds

By doing this you can simply identify your tasks and include the 15 + day wait time and as you might be knowing that MS Project allows you to enter time down to minutes, so I don’t think there would be any problem.

[emloy4it]

Because I have 200 tasks (similar to ones in my previous email) for each project, it is very difficult to minus 3 or X hours each time from the supplier time. Do you think there is a simpler solution or Is there a way to use formulas and how to do that?

[IRVING]

When you say you have tried using lag time can you describe exactly what you have done?

If you can't split the tasks I would enter the following for task A:

• Duration: 1 hour

For task B:

• Duration: 4 hours
• Predecessor: (assuming task A is ID 1): 1FS+20days

For task C:

• Duration: 5 hours
• Predecessor (assuming task B is ID 2): 2FS+15days

[brain]

How to set 4 meter work per day target in Microsoft Project .

Somebody please help.