You can't but it looks like someone has come up with a solution:
https://pro2col.com/blog/using-azure-ad-saml-for-both-users-and-admins
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We are migrating from Okta to Entra. In our environment, we have two GoAnywhere applications. One for users and one for admins. This is not uncommon to have multiple app instances within one Service Provider (SP). In the federation metadata XML, we can see the entity ID, also called the Microsoft Entra Identifier (see image below) is sent over to the SP.
The issue is the SP, GoAnywhere, does not support having two applications with the same Entity ID. The SP entity IDs are different, but the IdP entity IDs are the same value. The Microsoft Entra Identifier is always just in the format "https://sts.windows.net/[TENANTID]".
Is the Microsoft Entra Identifier/IdP Entity ID something that can be changed? In Okta the IdP Identifier is always different.
You can't but it looks like someone has come up with a solution:
https://pro2col.com/blog/using-azure-ad-saml-for-both-users-and-admins