How to select/deselect all in the update manager?

[TwoFistedJustice]

I have a pile of updates showing up and I'm working on a slow public wifi connection. It seems that the default is to select all.

I would like to update a few packages but I would not like to deselect 50 items one at a time.

It seems a bit silly that there would be no way to deselect all of them at once.

Is there a way?

[claydoh]

You'd be better off with a package manager like Muon to do this, I think you can select individual packages there, and ctrl-a should work (I think) if there isn't a menu or button to do so.
But you have to be careful, as some packages require others so that things work, so breakages can/will happen, especially if they are Plasma related, and you shut down, reboot ,or log off without having all of them. It might be better to hold off for a bit until you can get to a better connection.