Custom state for reusable element

I’m currently working on a project where I have a reusable element included in a group. I need this reusable element to set a custom state when clicked. However, I’m having trouble with this because the group under custom state is not showing in the selection in the reusable element section.

Is there a way to set a custom state from within a reusable element without detaching it and manually setting the element workflow in each group? This process is quite laborious and I’m looking for a more efficient solution.

Any help or guidance would be greatly appreciated. Thanks!