Hi, If you want to use an existing plan and have an O365/Outlook group already created then you need to first merge the existing Group with MS Teams. I wrote a document explaining the process. Step 3 is the one that got me at first. I did have graphics in here but copy and past removed them. Hope this helps.
The following assumes you have an existing Outlook Group that you want to turn into an MS Team. You must also be the Admin of the group.
- In Teams select Add team from the bottom left corner.
- Choose Create Team
- Select Add Microsoft Teams to an existing Office O365 group. It does not look like you can click on it but you can. Do NOT enter a new name in the Team Name field.
- Choose the Office 365 group you want to add Teams to by clicking on the radio button to the left of it. Then click the Choose Team Button.
- Click on the + symbol to the right of the toolbar on your new Teams page.
- Click on the Planner Tile.
- Choose Use an existing plan. Then click on the dropdown below and then click on the name of your plan which should be the same as your group name
- Save the plan
- Your existing plan will be imported into Teams
- You can rename the Plan to something more descriptive if you like.
Caveats
- Files will need to be moved from the group site manually
- OneNote notebooks will need to be merged. You cannot see Teams OneNote files in Groups or vise versa. You can however open a local OneNote client and see both under separate tabs.
- The calendar should continue to show your meetings that were created in the O365 group. Meetings created in Teams however don't seem to appear if you go to the group calendar.