LibreOffice Impress. How can animations be chained?

I want to move the same object several times by using different effects sequentially. I’m a rookie and I can’t find the way to add the second and subsequent effects on it. Every time I select the first effect and then I want to add the second one, the first one disappears from the effects list window on the right. Apparently it should be easy. Could someone please tell me what am I missing?

Do not select the first effect, but select only the shape. Then click the “Add” button, same as with the first effect. If you want that the second effect follows the first effect immediately, without an action of the presenting person, then set the ‘Start’ field of the second effect to item “After Previous”.

Thank you very much for the tip! And what if I want the presenting person to decide when the second effect will be trifggered? Should the ‘Start’ field be ‘on click’ instead.

And a second quick question, please. What is the ‘Delay’ option for exactly? Is it supposed to be the time to pass between the click triggering the effect and its execution maybe?