Prevent Seekbar Dragging on Layers

Hi Team!
We are trying to achieve the following:
- Make the seekbar dragable after completion on base layer & additional layers
- Ability for the user to play and pause audio and animations on all layers in case they need to take notes, use the bathroom, etc...

Here is what we have tried and the problems we have encountered:
- Tried: in the player settings, we clicked 'only allow drag after completion'
--Problem: user cannot pause for a break after completing the base layer, additional layers keep playing. 

-Tried: we paused the timeline of the base layer for additional layer properties
--Problem: seekbar becomes dragable on additional layers

-Tried: put all audio on the base layer
--Problem: audio will now pause and play as desired, but animations keep playing for additional layers once you've completed the base layer 

How have others been able to solve for this?
What else might we try?

Thanks in advance!