Without having more information about the problem, my first guess is that you are not clicking on a new beat marker before placing a section. If you don't do that, the section is just changed at the same beat position over and over again because phrases/sections are stored at whatever beat marker is currently selected and not at the seek position (which is why these functions are in the Beat menu).

The problem is for example:If i add an intro to the begining of the chart and then i add verse section to where is the verse,it's overwrite the intro and so on.

Are you sure you're clicking on a different beat marker before adding each new section? By default when you open/create a project, the first beat marker (-->) is automatically selected. If you don't manually click on a different beat marker, all Rocksmith sections you place will be on the first beat marker instead of where you want them to be.

 

The Info panel will indicate which beat marker is currently selected (with Beat = #).

Are you sure you're clicking on a different beat marker before adding each new section? By default when you open/create a project, the first beat marker (-->) is automatically selected. If you don't manually click on a different beat marker, all Rocksmith sections you place will be on the first beat marker instead of where you want them to be.

 

The Info panel will indicate which beat marker is currently selected (with Beat = #).

It looks like that was the problem.In my previous works i didn't selected the beat bars and there was no problem and now there was the problem.WAS.Thanks !  :D