Moving all objects

This is a stupid question, I know but I neet help urgently. How can I move all elements in a time line? I have 50 key frames If I select all and move them with the mouse only the frame with the marker on it is moved.

What am I doing wrong

Tanks in advance

You need to use the Edit Multiple Layers tool. It’s underneath the Timeline - you’ll find it if you hover over the buttons for a minute. It’ll display a selection checker above your Timeline in dark grey. Just extend that out to encapsulate your whole movie. Select all your layers, and the whole thing should move.