Simple Snap Hook/Groove design

[raminee]

Hello All,

I am not a mold designer by any means but I have a question on a simple Hook Groove type of design.
I have seen many snap hook designs but I am not sure how the recess part or the groove part is made in a mold.
Do they use sliders or other methods.

My question is in the attached drawing.
Will appreciate any comments or thoughts on this .

Thank you
Raminee

PS I missed the yellow line drawing but I am sure you can figure out the drawings. Thx !