Post installation

Hi everyone,

I've been struggling with a problem in Drupal for a few days now and I'm completely stuck. I'm trying to build a simple database of manufacturers and their products, where each product is associated with a single manufacturer.

Here's what I'm aiming for:

• Users should be able to add new entries using a form.

• The form includes two dropdowns: one for selecting the manufacturer and another for selecting a product.

I have a file in my theme:  user.html.tig.

I'm using the telephone field module. Is it possible to format the number as a standard US telephone number (xxx) xxx-xxxx? 

I'm only displaying the number as plain text wherever I use the field. 

I see that there are a few modules that do this, but I'm wondering if it's possible to do it via css styling? Or is there some kind of string replacement option?

I'd appreciate any help. Thanks so much!

Hello all - our application have different site configurations depending on the site itself. So this concept is similar to Drupal's site configurations for site name, logo, slogan, etc. However, my application will need additional site settings. What is the best way to implement these site dependent configurations?

In the content type settings page, under display settings, there is a single checkbox allowing me to display or hide both author username and publish date. The choice is either both or neither. 

I want to hide the author name, but display the publish date (for all items of a particular content type). 

Is there a simple way to do this? Can I do it in my sub theme's custom stylesheet?

Or is it best to disable them both in the content type settings, then create a new field just to show the publish date?

What's the best practice here?

After ugrading Drupal to 10.4, I get this or similar error on many configuration pages:
 

"The system.site config object must specify a language code, because it contains translatable values"

I don't give a hoot about language translation as our sites are 100% internal, staff-only and only in English.  Where do I go to either turn this off or set what needs to be set so I can save my settings?