[Gsap Scrolltrigger Section Pin issue :(]

I have a section middle of page and into this section i have inner scroll

When user reached this section firstly pin the section until inner Scroll end then unpin the section on the parent scroll child scroll run until child scroll end....

Please i need help

[Scroll Trigger issue]

I have a section middle of page and into this section i have inner scroll

When user reached this section firstly pin the section until inner Scroll end then unpin the section on the parent scroll child scroll run until child scroll end....

Please i need help

[Bubble move all over the page]

I want a bubble effect on scroll move random the page 

How can i achieve this