Allow the hiding of the "Share with" option from the customer portal

Problem Description:

At this moment, the option to allow the sharing of newly created requests with other customers/organization in JSD is available for both Agents and Customers, however, there are some cases where the customer should not be able to select who they can share their requests or see who are able to access it.

Suggested Solution:

Have the option to hide the “Shared with” field from the customer portal, allowing ONLY the agents to see/share which customers can access the request.

Why this is important?

This is applicable for the scenarios where the requests must be automatically shared/not shared, not allowing the customer to change it afterward, as in the example below:

If a customer creates a new issue, they can choose to make the request private. I'd like to disable this.
When we manually create an issue and set the reporter to one of our customers, the organization remains unset. We can manually set an organization, but I want to make this process automatic depending on the originator. That is, if I set the originator of the issue to user X, and user X is part of organization Y, I want to add organization Y to the organization field to enable everyone that belongs to Y to view the issue.