Tempo changes

I’m new with Ardour, and I want to record my band with it.
I just made the time line with the tempo and bar changes, but now I see that I did a mistake with the number of the bars.
Now, can I move one tempo change pulling with it the next changes??
I don’t now if it’s understandable… Easier: I have 4 tempo changes: at 12, at 46, at 52 and at 70 bars.
The point is that the one at the 46, should be move at 48, but if I move that, the next two changes stay at 52 and 70, and I’d like that also they move to 54 and 72. Can I??

Thany you and sorry for my english…

what version of ardour are you using?