How to pass values to a function that expects a Class

So i have a method for creating a user on my firebase db, It expects a instance of a specific model.

But I have no idea how I take the values combine them and then pass then to the function as that type.

import { Component, OnInit } from '@angular/core';
import { Entry } from '../entry.model';
import { MemberService } from 'src/app/member.service';
import { Member } from 'src/app/member.model';
  selector: 'app-register',
  templateUrl: './register.component.html',
  styleUrls: ['./register.component.css']
export class RegisterComponent implements OnInit {
  entry: Entry;
  member: Member;
  constructor(private memberservice: MemberService) { }

  ngOnInit(): void {
//function being called from front end button with input fields that pass values
  create(surName: string, pass: string, color: string){
     //Should call createMember();
     //Id,Priority gets set here not by the user

The Service function:

  createMember(member: Member){
    return this.firestore.collection('members').add(member);

The Model

export class Member {
    id: string;
    surname: string;
    color: string;
    password: string;
    priority: number;

Source: Angular Questions