Any way to change the time value of many notes

Let's say I have written few bars for a whole orchestra, all these bars contain just whole notes, but there are many of them. I suddenly decide to change these bars to 3/4.
Is there any way I could select a bunch of notes and change the time value for all of then at once? In Overture you could do this by hitting the number 2 and a dot after it and voila.
I didn't come up with anything else but just selecting a dotted half note to the music cursor and then clicking each of the notes on their corresponding places separately. Is there any faster way?
Also, same question about adding a dot to many notes at once? With staccato this seems to work by hitting 1.
Is there any way I could select a bunch of notes and change the time value for all of then at once? In Overture you could do this by hitting the number 2 and a dot after it and voila.
I didn't come up with anything else but just selecting a dotted half note to the music cursor and then clicking each of the notes on their corresponding places separately. Is there any faster way?
Also, same question about adding a dot to many notes at once? With staccato this seems to work by hitting 1.