Changing bids on all keywords in one go

Hi,

Does anyone know how to change the bid amount for all keywords in one go.

Currently I go to Ad Group > Targeting and then have to change the bid individually for each keyword
which is very time consuming.

There is also an ‘Ad Group Settings’ that has a default bid value. However when I change this it doesn’t seem to change the amount against the keywords in the targeted bid page?

If anyone knows how to do this that would be great.

Thanks,

Rich