As an administrator, you can enable the ability for users to export to Microsoft Planner.
Quick Steps
Open the Settings from the left navigation menu
Click on the companies button
Open the individual company detail screen
Select or unselect the Export to Microsoft Planner permission
Add the access tokens in the properties tab
Click Update Company
Once the setting is selected, there are several access tokens that will need to be added to the company under the properties tab. Only once the permission, and all valid access tokens have been added can the permission be saved to the company. Then the option to export to Microsoft Planner is available within processes and value streams.