I tried many scroll methods by Javascript on the forum, to exactly, all of them.
I noted that there are lots people trying to find the the best methods for scroll at fixed position.
Personally, I think the following one is the best one, that support scroll multiple timeline, multiple elements, multiple layouts, and support sticky at the fixed position. However, the most important is that the scroll process is very smooth.
Hmm... I thought this would be an easy modification, but scrollmagic seems to have issues when elements are embedded in other divs, like how symbols or groups work. In fact you can see that the example fails if you just add one of the elements to a group.
I searched through their documentation and couldn't find a mention of this problem or solution, so perhaps there's some interaction in hype's absolutely positioned groups that is unexpected from scrollmagic.
You may want to find a different way to do the control...
I converted one of the old examples to use symbols.
My original one on e the below thread ( derived from Alexii's ) could be used with attributes and Groups already.
Please don't ask me to go over it as I barely remember what I did last time and have not revised it all, it is a little bit complex.
Read the original thread
But all I mainly did here was transfer every thing to a symbol, and transfer the attributes and class name I had on the group to the symbol instead. Then change the code to use the symbol instance.