- To select object that are under other objects on the page, select the pick tool, hold the "Alt" key and click on object you want to select. The “Alt” key invokes the “Digger” tool, which will ignore the top most objects on the page

- Select the pick tool, hold down the Alt key, and click and drag to  create a marquee selection... any objects or text that the marquee touches will be selected. So you don't have to worry about containing the entire  objects within the marquee.

Tip provided by CorelDRAW team.