Remove float for all in progress activities

You dont "remove" float. Float is a output of the critical path method scheduling calculation.

If you're gaming your schedule to show a sequence of tasks as critical, then look at the total float value of a task, and increase its duration by the total float amount, and then it and all subsequent tasks should appear as critical.

But I would suggest a more thorough review of the schedule to understand why you want to do the above.

the only way that there is no float is when the activity is finished. You can't remove float you can adjust is value by increasing or reducing durations, changing logic or by adding constrcint dates.

total float is a calculation between the early dates and the late dates plain and simple. 

Thanks

Thanks

Thanks Both Santosh and Zoltan, I agree with you both. I'm awar making all activities critical is not correct. This request actually is becouse of 9 months delay in the project and client wants to know if all activities get critical what will happen to the project finish date.

then insert a 9 month activity into the current critical path of the schedule