PageBreak is available for the sections of the report. More info here
. It does not matter whether you are using the Standalone Designer or the Visual Studio one for this scenario.
In case you are using a table to display the information, there is no page break option for the table/table groups.
Parent, Child, Adjacent refer to the place to insert a group inside a table group hierarchy relative to the currently selected group.
Inside, Outside refer to the place and group where you can insert a new row/column in the table structure.
The terms are self explanatory for the most part. More info on these concepts here