I have an standard worklist fiori app ( WBS element overview ), and on the object page i want to add a custom new section.

How can i do that? I want to follow maximum standard as possible, an adding a fragment or something like that i think would not be sufficient.
This object page it's based on a cds and the sections are declared on local annotations, but on the adaption project i can't seem them. I tryied to create an local annotation file with the new tab but it has no effects.
Standard annotations on a different project folder ( copy project ( not actually the adaption project ) ):

My local annotation add on adaption project to try add an new tab/section to the object page.

I will need also then to change the cds for the object page ( change standard to custom ), but i dont know how to it as well on manifest_appdescr_variant.
Please try to respond with examples, thank you!