Power Pages does support categories, but the category field you’re seeing (mspp_category) is part of the legacy Dynamics 365 Knowledge Management model. That’s why it appears as a locked Dataverse choice and why you can’t edit it directly from the Choices table.
A few important points that explain what you’re seeing:
1. mspp_category is a legacy, system‑managed field
This field comes from the old Dynamics 365 Knowledge Base feature.
Because it’s system‑managed, it:
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doesn’t appear in the Choices list
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can’t be edited directly
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is locked for modification
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isn’t intended for general Power Pages content categorisation
So you’re not missing permissions — the field simply isn’t editable.
2. The documentation you found applies only to Dynamics 365 Knowledge Management
The article you linked refers to:
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Service Management
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Knowledge Management
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KB article categories
These settings only appear if:
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You have Dynamics 365 Customer Service Enterprise, and
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Knowledge Management is enabled in the environment
If your environment is a Power Pages–only or Power Apps environment, those settings will not exist.
That’s why you can’t find “Service Management” or “Knowledge Management” in your environment.
3. Power Pages does not provide a built‑in UI to manage categories
There is currently no OOB interface in Power Pages Studio or the Portal Management app to manage categories for web pages.
If you want to categorise pages, you’ll need to use one of these approaches:
Option A — Create your own custom Choice field (recommended)
You can:
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Create a new Choice table
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Add it to the Web Page table
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Use it to group/filter pages in your site
This gives you full control and avoids legacy dependencies.
Option B — Use a custom Dataverse table for categories
If you need:
Option C — Use the legacy Knowledge Management categories (only if you have D365 Customer Service)
If your tenant has Dynamics 365 Customer Service Enterprise, you can enable Knowledge Management and manage categories from:
Customer Service Hub → Service Management → Knowledge Base → Categories
But this only applies if you’re using the full D365 Customer Service app.
Summary
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You’re not missing permissions.
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mspp_category is a locked, system field from legacy Knowledge Management.
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Power Pages does not provide an OOB way to manage categories for web pages.
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The recommended approach is to create your own custom category field or table.
