Help with Turkish Coffee!!!

At my job, they would like me and my coworkers to start making Turkish coffee. I have barista experience, but no experience with Turkish coffee. My employer purchased a Turkish copper sand coffee maker, and we also have sand and coffee. Here's the machine: https://cornerbeyti.com/en/turkish-copper-sand-coffee-maker/p879462935

I would love any advice on recipes/techniques! My manager was saying we'd use the our coffee grinder, but I don't think it will make a fine enough grind. I also am not sure how thick of a layer of sand to pour in the machine. The only info I found said between 0.5 and 1cm above the heating implement, but this seems too shallow.

Below is the recipe I found on https://sakiproducts.com/blogs/turkish-coffee/turkish-coffee-on-sand?srsltid=AfmBOoovmpGurRfX5wKVyJQx6y2MXoUS9opRf0FBEGKDGjDAs8q6pp0E

Pour sand into the machine and heat to between 190-200C.

Once heated:

Step 1

Add cold water and sugar (if desired) into the cezve. 

Step 2

Gently place the cezve into the sand, making sure it’s stable.

Step 3

Add grounds to the cezve. Do not stir.

Step 4

Heat the cezve till the coffee nearly foams over, and remove from the sand. Allow to cool for a few seconds till the foam subsides. Repeat this process 2-3 times.

Step 5

Rest coffee for 30 seconds so the grounds settle. Gently pour coffee, keeping most grounds in the cezve. (Similar to decanting wine?)

Any advice would be helpful! Thank you!