How to adjust the angle of the sacrum in the sagittal plane

Hi,everyone
I tried to adjust the angle of the sacrum in the sagittal plane, but I can only change the angle between the lumbar vertebrae, but the sacrum is always immobile, so I would like to ask if there is any good way to do it.
Uploading: 1{7(_JVQ7~JGNKY2%9%3W9U.png...
Uploading: @Q)WV)HOBCLH@RB{6QA04FF.png...

Hi @meng

AS mentioned in the other post, you are only adjusting the load positions of the sacrum. As soon as you start the simulations, the spine rhythm and other drivers will kick in and determine the angle and position.

You will probably need to adjust the spine rhythm if you want to control the angle throughout the simulation.

Best regards,
Bjørn

HI,Bjorn
Thank you very much for your reply
How should I adjust my spinal rhythm now
I don't know where to adjust
Best regards
Meng