How can i create Autofill Field?

Hi, i’m a noob about Suite crm but i learn very fast. I’m Italian and I need some help about Autofill Field.
I’ve modified “quotes” module and need to insert into this module “Mobile Phone” Field, but i want to take it automatically when i fill Contact relate Field with another contact.
For example:
I create a new quote record and fill the relate field “Contact” with a contact. I need to autofill another field of the quote module with the mobile phone of the contact module.
Someone could help me pls, thanks for the attention!

One way will be to add logic hook on save. That way you can control what fields and what information is saved.

Here is the LogicHook documentation:

Here a sample of logichooks: