Relationship between two rooms

Hello
I can't seem to make tapped holes in the colored part (which is in the edited state) from the transparent part.
image
No way to put relations either, they are at the same level in the tree.
Thank you for your help.
Cdt
Fred

Hello, welcome.
Personally I don't really understand your image.

Edit: ah, if I decode, the colored piece is the yellow piece, with a brown edge, right?

PS: your avatar is the same as another member, it's quite confusing.

Hello
Regarding my avatar, I am the same person, the only difference, the company has changed its name and so I find myself with a new account!
Fred

Hello;

Is the color part an imported part (see 3D interconnect)?
Or is it non-volume?
Is it possible to select the face on which you want to drill the holes?

Hello
I can select the face and this is a volume that I designed!
image

Hello

Is it possible to have the files?
Which version of SW?

Hello @Silver_Surfer ,
Sorry I can't transmit the 3D.
Thank you
Fred

I thought that this newcomer also had the same name!

I'm going to make a response to the "hotline" of Bouygue teleccom but:
Have you restarted Solidworks in the meantime?
You didn't give us the version of Solidworks used.
Can you create a sketch on the front of your piece?

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Maybe this option (1), not enabled or the (2) if not enabled limits you to external refs on a single part (or AS):
image

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