ISA R3 edition : User type

Hello

I have a question concerning the type of the R3 user I should create :

We've created a mockup with ISA for R3 edition with user type "Communication". I've created them manually.

Now, I'm testing ISA_USER_CREATE function and I've seen that users created thanks to this function have type "Dialogue".

Since this is standard function I imagine SAP did it on purpose. Do you know why ?

What is the right user type to use ? For me "communication" is less dangerous that "dialogue" one.

Thank you