Layout > Working with Entities > Modifying Entities > About Modifying Entities
  
About Modifying Entities
You can modify geometric or construction entities in a layout by dragging control points that automatically appear when you select an entity. You can also select entities and drag them to a new location. You can also perform the following operations on entities:
Group, ungroup, or regroup
Pattern
Mirror
Trim or extend line segments
Rotate or resize
Divide
Merge
Flip
Add or delete points on splines