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- Open the Interval Update page for the interval (click here for steps)
- Select Variable Groups in the left panel
- Check the box in the Include column for the variable group to collect at the interval
- Check the box in the Subject Accessible column if the variable group will be entered by subject in their portal
- Uncheck the box in the Include column to remove the variable group from that interval
- Variable Groups with usages in the interval cannot be removed
- Click on the magnifying glass to find the usages
- Usages of data cannot be removed and the variable group can be set to inactive
- Usages in the interval expression or data sets can be removed
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