# Ansible Tower Inventory clarification

**URL:** <https://forum.ansible.com/t/ansible-tower-inventory-clarification/25816>\
**Category:** Ansible Project\
**Created:** [October 25, 2017, 11:34am UTC](https://forum.ansible.com/t/ansible-tower-inventory-clarification/25816 "2017-10-25T11:34:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![anoop\_vc](https://avatars.discourse-cdn.com/v4/letter/a/ecccb3/32.png) [@anoop\_vc](https://forum.ansible.com/u/anoop_vc)\
**Post date:** [October 25, 2017, 11:34am UTC](https://forum.ansible.com/t/ansible-tower-inventory-clarification/25816/1 "2017-10-25T11:34:02Z")

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How will I specify the credentials to be used for a group of machines using ansible tower UI. if it is single machine, I can create a credential and select it in template. if it is a group of machine, Do I need to use the same username on all machines??