How do I Change the Speed of Multiple Clips?

Hello there,

A question, I am new to Premiere Pro. I used another video editingprogram, but was not satisfied. So I hope you bear with me with this simple question.

If you want to speedup a clip, e.g. to 2000% (speedbuilds Lego e.g.), do you have to do that clip by clip, or can you also select all clips at once and speed it up at one time. (My last editor was not able to do that, so I had to do it while editing the video. I prefer to do that at the end and at once. 

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