Hi @mrezac
Thank you for posting.
According to your description, you would like to get candidates’ information and send offer letter to user through DocSign.
Before we start configure a flow, could you please share me some information below?
Where did you store candidates’ information?
What’s the format of your candidate information?
What do you mean by offer letter template? As I known, there is no related feature in O365.
By the way, for DocuSign, we do have such connector supported in flow but we don’t have test account for this service as it’s a third party service. Thus, it extremely difficult for us to test directly. But I can share you some information about create flow with DocuSign.
Here is a video help us create flow using DocuSign.
https://www.youtube.com/watch?v=nxuA8AxE4lI&feature=youtu.be
Hope the content above may help you.
Thank
Anna