Can't find the button to "add files to sync"

I can’t find the button to “add files to sync” after not configuring anything when I first launched Nextcloud.
On windows with lasted version of NextCloud 34.0.3.

Thanks for your help.

Click on your account in the top left corner and a directory tree will be shown (once it has been synchronized) on the right side of the window. Now two ways exist to select what you want to synchronize.

  1. Navigate to the directory which you want to synchronize, right click on it to make it locally available.
  2. Click on the 3 dots in the upper right corner and select “open folder”. An explorer window opens which shows all directories and files. Select one, choose “show more options” and “always keep on this device”.

thanks @j-ed it works