Click the Pause icon 
on the group's tab. The color of the icon indicates the current status of the blocks in the group:
- all blocks are collecting data
data is stale for all blocks in the group
all blocks are paused and not collecting data
some of the blocks are paused, while others are collecting data
This can also be accomplished by checking or unchecking Group | Pause All Blocks in the main Watch Window menu.
See also
- Adding groups to the Watch Window
- Copying a block from one group to another
- Creating a group automatically from a Function Block
- Deleting groups in the Watch Window
- Exporting a Watch Window group definition
- Hiding groups in the Watch Window
- Importing a Watch Window group definition
- Importing a block list to the Watch Window
- Managing Data Collection in the Watch Window
- Managing Groups of Blocks in the Watch Window
- Pausing data collection automatically in the Watch Window
- Printing the data plot from the Watch Window
- Renaming groups in the Watch Window
- Setting the autopause schedule for all blocks in a group
- Setting the update interval for a group of blocks in the Watch Window
- Managing Data Collection in the Watch Window
- Pausing data collection automatically in the Watch Window
- Pausing data collection for a block in the Watch Window
- Setting the autopause schedule for a block
- Setting the autopause schedule for all blocks in a group
- Setting the default autopause schedule
- Setting the update interval for a block in the Watch Window
- Setting the update interval for a group of blocks in the Watch Window
- Watch Window Autopause Schedule dialog