Teamflect fetches your department information directly from Microsoft 365, but you can change the department information via Microsoft Azure AD.
To change department information in Teamflect, you have two options :
Upload in bulk [Requires Microsoft365 admin permissions] (Advanced)
Add manually [Requires Microsoft365 admin permissions]
Note: Both options require you to have administrative permission in Microsoft 365.
Option 1: Upload in Bulk
More information can be found here: https://help.teamflect.com/en/articles/8929318-how-can-i-upload-user-information-to-azure-ad-org-chart-department-job-title-etc
Option 2. Add Manually
Go to https://aad.portal.azure.com/#blade/Microsoft_AAD_IAM/UsersManagementMenuBlade/MsGraphUsers and log in with your credentials.
Select a user by clicking the user’s name (which will look similar to the image below).
A page will open with all the user details. Click “Properties”
Under the “Job Information” section,, you will see a text field for job title, department,, and manager information. Click the“Pen” icon to change the existing job information.
After making the necessary changes in the opened tab, click the "Save" button.
Note: It should take around 5–10 minutes for the changes to reflect Teamflect.