I don't know if I understand correctly what you want, but ...
If you want to update a person's data, it's simple:

1. Go to the person's page
   
2. Click the Overview and Edit shortcut
   
3. Click on the language you want to make data updates
   
4. Make the updates.

If you want to add a new image for a person:

1. Click on Media and Profiles
   
2. Click on the small "+" sign next to Images
   
3. Follow the instructions.
   

The process is similar for Movies and TV Show

Hi ticao,

For Person its OK thanks, but still I can not find how to update a company detail, for example I want to add logo_path to a company

Infact, correct me if I am wrong but currently there is no company info et all in movie's page ? How people add companies then ?

@rastek said:
How people add companies then ?

The logic is similar to adding cast or crew.
A film was created but still has no Cast or Crew.
You click on Overview > Edit of the movie
Go to the Cast page
Click Add a New Cast Member
Type the name.
If the actor exists here, his name will appear as an option.
If the actor does not yet exist here, you click on the Create it... option.
And the actor's page will be created.

In the case of a company, go to the Production Information page and click on Add Production Company.
Type the name. If it does, the option appears.
If not, click Create it.
Be careful, don't create duplicates.

Infact, correct me if I am wrong but currently there is no company info et all in movie's page ?

Yes. On that Production Information page.

but still I can not find how to update a company detail,

Do a search using a company name. The option will appear. Click and go to the company page.
https://www.themoviedb.org/search/company?query=Pixar&language=en

for example I want to add logo_path to a company

Read the instructions here: https://www.themoviedb.org/bible/image/5bb6259dc3a3687983000001

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