Yeelights in Group have no Control

I have 4 yeelights (adj white) in a group. I go into the device for the group but there is no control of the lights (on/off) or the level of brightness.
Anyone know why? thanks

Actually I was planning to open a thread for the same but for a group of Sengled RGB, they work directly but not in the group, Hue and Saturation doesn't work, but the color picker works.

I had to change it to Group Bulb Dimmer. But the lights are adj white only not color. Why is there not a selection for Group Bulb CT?

Your color temp control is right there in Group bulb Dimmer.

13-00-48-14

Thanks, I saw it finally. I guess it is a driver for both kinds of bulbs. Works fine.