[Improvement]: Improve accuracy of cost center allocation docs as related to Copilot premium requests (#60199)

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: sophietheking

content/billing/reference/cost-center-allocation.md

@@ -26,7 +26,7 @@ This article contains reference information for how spending is assigned to cost
 | {% data variables.product.prodname_enterprise %} | The user who receives the license (priority), or the organization that is billed for the license. |
 | Git Large File Storage | The repository or organization where Git LFS is used. |
 | {% data variables.product.prodname_registry %} | The repository or organization that owns the package. |
-| {% data variables.product.prodname_prus_caps %} | The user who triggered the use of the {% data variables.product.prodname_pru %} (priority), or the organization they belong to. |
+| {% data variables.product.prodname_prus_caps %} | The user who triggered {% data variables.product.prodname_pru %} usage (priority), or the organization that granted the user's {% data variables.product.prodname_copilot_short %} license. |
 | {% data variables.product.prodname_GHAS %} | A user who uses a license (priority), or the organization that is billed for the license. |
 
 ## Details for license-based products

data/reusables/billing/cost-center-allocation.md

@@ -2,6 +2,6 @@ To allocate metered spending to a cost center, you add repositories, organizatio
 
 * For **usage-based** products, like {% data variables.product.prodname_actions %}, cost centers are charged based on the **repositories or organizations** in the cost center, as this is where the usage takes place.
 * For **license-based** products, like {% data variables.product.prodname_copilot %}, cost centers are charged based on the **users** in the cost center.
-* For products billed by **{% data variables.product.prodname_pru %}** usage, like {% data variables.copilot.copilot_coding_agent %}, cost centers are also charged based on the **users** in the cost center.
+* For products billed by **{% data variables.product.prodname_pru %}** usage, like {% data variables.copilot.copilot_coding_agent %}, cost centers are charged based on the **users** in the cost center, or the **organization that granted the user's {% data variables.product.prodname_copilot %} license** if the user isn't directly assigned to a cost center.
 
 Cost centers only apply to metered usage, and do not work with volume or subscription billing.