How to work with one path?

i used translator to text this!

Not so long ago has downloaded the new version of the program and now I puzzle over that how to choose one path and to edit it? All paths time are eternally allocated at once. How to edit one path when is created a little?

I looked for video with instructions and manuals, nothing acceptable, in despair any more!

You have accidentally enabled “Sync-Lock”. You need to turn it off.