Learn what a director resignation letter is, discover a template and review multiple examples to reference when writing your own letter. I will go over a step-by-step resignation template letter you can use, how to structure it and provide examples of resignation letters.This job aid describes the process for submitting your resignation letter. How to fill out the Director Resignation Letter Template for Companies? 1. Enter the date on the letter. 2. Thank you for your service to the public at the City of Dallas. This page contains information as you leave your employment with the City. Per Dallas ISD Policy, all exiting employees are required to submit an official Notice of Separation (S54 Form). The Dallas County Administrative Code contains the employment policies and procedures for Dallas County.