Inventory groups with same hosts but differnts ansible_ssh_user

hello,
Here is a sample inventory that i want to use

[paadadm]
machine1 ansible_ssh_user=admin comment=“Sandbox Admin Node”

[paadsrvwbsa]
machine1 ansible_ssh_user=doe comment=“Sandbox Node A”

[paadsrvwbsb]
machine2 ansible_ssh_user=anotherone comment=“Sandbox Node B”

[paadstack:children]
paadadm
paadsrvwbsa
paadsrvwbsb

if i use this sample playbook

Finally i’ve found the solution (thx to raphael) : make an inventory alias

[paadsrvwbsa]
machine1_alias ansible_ssh_host=machine1 ansible_ssh_user=doe comment=“Sandbox Node A”