Your group consists of several nodes. Expose these nodes as attributes in the group node Attribute Editor so that you can adjust their values without the need to enter group view.
- Select the Color node in the group view.
- Enter the Name field (MyColor) and give it an ordering number (1).
- Repeat the same for the Float node using MyMultiplier and 2.
- Exit the group view and select the group node. The group node Attribute Editor now exposes MyColor and MyMultiplier as attributes.
You can now adjust the color and multiplier without entering into group view.