Hi KS,
Welcome to this Microsoft Project newsgroup
Further, when you've created the set that Rob describes that has only the
Start No Earlier Than constraint, try this: select all (click the Task Name
column heading), then Project/Task Information/ Advanced tab and in the
dialog select in the Constraint Type field to read As Soon As Possible.
Then OK will do the global change you're after. I described this as being a
useful method of doing a global change to any of the parameters listed in
the Task Information dialog.
In case you're unaware, the Start No Earlier Than constraint has probably
appeared by typing in the Start Dates of the tasks. Never type in dates as
such constraints will inhibit the flexibility of your project. Just enter
Tasks, Durations and Precedence links and let Project do its job of
calculating the dates for you based on that data.
FAQs, companion products and other useful Project information can be seen at
this web address:
http://project.mvps.org/faqs.htm
Hope this helps - please let us know how you get on
Mike Glen
MS Project MVP
See
http://tinyurl.com/2xbhc for my free Project Tutorials