Arguing won't work. Find a better solution, make it work so that it is easier, etc than Excel and only then suggest it to the PM. If that's too much work, the

Arguing won't work. Find a better solution, make it work so that it is easier, etc than Excel and only then suggest it to the PM. If that's too much work, then just grin and bear it. There are more important things in life than arguing with PMs.