How to set a gradual tempo change for the mix

Hi

I want to set a gradual tempo slow down at the last few seconds of a song...

This used to be so easy in Garageband...

But in Logic Pro x ...in seems to be very complicated....

Okay let me explain.....

In automation mode in garageband you can select on the master track a tempo line which you can just set nodes on a tempo line and pull down the last few bars of a song to zero....and the whole mix would just slow down....

But no such luck in logic unless I have completely missed ...it

Can anyone help....???

Thanks.