Ability to change drawing in more than one layer at a time

I noticed I can’t change the Drawing number (with the Library Slider) if I select more than one layer or object at a time.

For example: say I want both hands of my character to be on Drawing no.2.
As is now, Animate will let me do this one at a time. So, two passages in the place of one.

What I think it should do is allow me to select as many layers (or objects on the stage) I want, and change the Drawing number with one strike.
The less frittering away with simple and repetitive operations like this, the better.

Of course, please pardon me if I’m requesting a feature that exists. If it does, I wasn’t able to find it.

thank you,