The Link pays from the first day of employment, which is the day you walk in the front door and start the company paperwork (this is just prior to the type rating), however it may take a week for the paperwork to go through, so it is possible to miss a pay cycle at the start (you will get the back pay). So plan on up to 4 weeks before pay day.
You will only receive assistance if they move you from the assigned base. So if you are flat broke, then maybe a brief loan to tide you over to your fist pay? They pay fortnightly, on time. If you are desperate you could try talking to the Senior base pilot, but I doubt they can help, getting paid outside of the pay cycle is as close to improbable as moving from the Link to mainline.