Control Flow Tab
Use the Control Flow tab of SSIS Designer to build the control flow in a SQL Server 2005 Integration Services (SSIS) package.
Create the control flow by dragging graphical objects that represent SSIS tasks and containers from the Toolbox to the design surface of the Control Flow tab, and then connecting the objects by dragging the connector on an object to another object. Each connecting line represents a precedence constraint that specifies the order in which the tasks and containers run
Additionally, you can use SSIS Designer to add the following functionality from the Control Flow tab:
Create package configurations
Sign the package with a certificate
To add these functions to individual tasks or containers in SSIS Designer, right-click the object on the design surface, and then select the option.