1 - Open Sidekick and go to the Letters to Tenants Section.
2 - Push the new button above the list of letters to add your own letter.
3- You will be prompted to either start with a blank document or import a previous document.
4 - Choose to add a new letter.
5 - Type in your letter. At the top of your letter you will see a set of icons for inserting. Put your mouse over the icons until you find the one for "Insert Merge Fields". When you click it you will get a list of Sidekick merge fields. Click on the one you want and it will be inserted into your letter where you want it.