Well I had the same issue and good news! There's a perfect way to it:
Home -> Select -> Enable the Selection Pane
Now in the selection pane you must see some names (probably some of them sheer gibberish!), those are the objects of your slide(I recommend you specify meaningful names for them specially if you're going to add many animations)
Now Go to the animation pane (while keeping the selection pane still opened). Select the object you want to animate and click "Add Animation".
Animations -> Add Animation
The interesting point is that by selecting multiple objects from the selection pane(hold the Ctrl key on the keyboard and choose them) you can add the same animations to all of them at once! Say I have three envelopes on the slide and I want to disappear them together. I've already named them env1, env2, env3. Now I choose all of them and add the "disappear" animation to them. Hope that helps!
(tested on PowerPoint 2016)
List where? I do not see anything, apart the following comboboxes: Start, Properties, Speed. – Toc – 2011-04-26T17:41:01.943
1Um, oops. I remembered wrong. OK, alternate method: select the top object and animate it. Then use Draw >> Order >> Send to Back. Select and animate the next item in the stack. Repeat until all items have been selected and animated, at which time the original top object will end up back on top. If you do this much, you might want to add a Send to Back button to the Draw toolbar--I always do. – CarlF – 2011-04-26T18:09:11.177