I have some knowledge in planning for such work. When we plan to down something to do something, there will be questions asked by the "challengers" -
-why do you need to shutdown the line to join the new line if you already put in the isolation valves?
-  If you intend to shutdown the main line, why do you put in the new isolation valves?

If you only need to shutdown to chop off or insert blind on the main line to decommission it, you should not put "shutdown to tie in new line" but "shutdown to decommission the leaking section".

I find it very confusing.
Congratulations on being promoted to CEO 😄

Jokes aside, this should be done and communicated to the people affected. You see people grumbling and sounded their worry about not able to prepare for Plan B water cut. At least say something to allay their fear mah.