Microsoft project management software used to plan, manage, and communicate a project schedule and other information among workgroup members, project managers, and other stakeholders.
The most likely reason is that the conversion capability has not fully rolled out in the current Planner experience being used.
Supported facts for this scenario:
- Basic-to-premium conversion is still rolling out Microsoft states that the ability for premium users to convert basic plans into premium plans is beginning to roll out. If the option is missing even though the plan is eligible and users have Planner and Project Plan 3, that matches a rollout gap.
- The plan must be opened in the new Planner app
The documented conversion path is:
- Open the basic plan in the new Planner application
- Select More (…)
- Under Add premium views, select People, Goals, or Assignments
- Confirm Yes, convert now
- Eligibility alone does not guarantee the button is visible yet
Eligible plans include:
- Basic plans shared with a Microsoft 365 group
- Basic plans not yet shared (coming soon)
- Not all basic plans can be converted
Plans created outside Planner core application or with business rules cannot be converted, including:
- Published Plans
- Loop task list plans
- Web can expose the option before Teams in some cases A matching Microsoft Q&A resolution recommends opening the same plan in Planner on the web if the option is not visible in Teams, because premium features can appear there first.
Based on the details provided, the practical checks are:
- Open the basic plan in the new Planner web app.
- Select … and look specifically for Add premium views.
- Try selecting People, Goals, or Assignments to trigger conversion.
- Verify the plan is a basic plan shared with a Microsoft 365 group and was created in the Planner core app, not as a Loop task list or published plan.
If those conditions are already met and Add premium views still does not appear, the issue is consistent with the feature rollout not yet reaching that tenant or experience.