STEP-1
Official Documentation
https://docs.microsoft.com/en-us/azure/active-directory/develop/quickstart-register-app
Its simple, Define App Name and Click Register.
STEP-2
Ask your Azure administrator to provide below delegated permissions for Microsoft Graph.
Group.Read.All
User.Read.All
User.Read
STEP-3
Configure authorized re-direct URLs:
// For [My Directory Groups Sync for Confluence Server & Datacenter], your Redirect URI will be: <CONFLUENCE BASE URL>/plugins/ldapgroupsync/manage-ldapgroupsync.action // For [My Directory Groups Sync for Jira Server & Datacenter], your Redirect URI will be: <JIRA BASE URL>/secure/AdGroupSyncAction.jspa // For [My Directory Groups Sync for Jira Cloud], your Redirect URI will be: https://adgroupsync.ilaesolution.com/azure // For [Manage Inactive Users for Jira Server & Datacenter], your Redirect URI will be: <JIRA BASE URL>/secure/DeactivateUserMainAction.jspa?oauthType=azure // For [Manage Inactive Users for Jira Cloud], your Redirect URI will be: https://manageinactiveusers.ilaesolution.com/azure