通知同事和客户離職

Are you talking about having one resignation letter for your co-workers and
your client?

Or you would like to have two separate one?

Could you be more specific?

What title are you?
Would you like a Formal letter or casual letter?
What company are you working for?

Are you planning to mail it out to your client and your co-workers?
Would you like a covering letter?

I would love to help you write a letter, it's not difficult , however, I need
to have at least some kind of info to start with.
Btw,

I hope this is not too late for your letter.

Write to me
And Good Luck

Ivy