You can lock the size and position of a text block. This preserves it from getting accidentally moved by you or by other authors working on your title.
The text block will be locked in size and position within Edit mode.
To lock the position and size of a text block:
Double-click the text block 
graphic of the text block in the Title Explorer. Alternatively, you can right-click the graphic and select Properties or right-click on the text block in the work-area and select Properties.
Click the Position & Size ribbon.
Click the Lock graphic in the Position & Size group so that the locked padlock 
. graphic is displayed.
You can also lock the size and position of the text block by right-clicking on the text block within the Title Explorer or within your work area and selecting Size/Position Locked from the right-click context menu. When the text block is locked, a check mark will appear to the left of the Size/Position Locked option within the menu.
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