Duplicating Layout into different layout sets

[cocoloco]

Hi! 

I am working with different layout subsets (preliminary concept/final concept). Some layouts (MANY layouts) will be completely same and I wish to reuse them. I tried ctrl/c/v, didn't work, I can't find actually copy or duplicate option itself...... I am sure I am just looking wrong and this would be silly to add into wishes. 

Please is there a way to simply (I already know this will be clickable way around) to just duplicate layouts through different layout subsets? 

Thank youuu

Operating system used: Mac Apple Silicon 14 Sonoma

[vlahtinen]

Hold down the Option key on the keyboard while dragging the layouts to another subset.