Laravel 5.1 hasManyThrough relationships and pivot table

I have the following models / tables setup in my application;

timesheet

• user_id

user

• id

supervisor_user

• user_id
• supervisor_id

Users get "assigned" to supervisors via the supervisor_user pivot table.

I have the following relationship setup on the User model, which gets supervisor users.

/**
 * The supervisors that are assigned to the user.
 *
 * @return Object
 */
public function supervisors()
{
    return $this->belongsToMany('App\Models\User\User', 'supervisor_user', 'user_id', 'supervisor_id')->withTimestamps();
}

I want to setup another relationship which gets a list of timesheets "assigned" to a supervisor. I'm guessing with hasManyThrough relationship...but not exactly how to write the code for it.

How can I achieve what I need?

via Chebli Mohamed