Launch Import Office 365 tool, select Office 365 Restore and provide the credentials i.e UserName and Password of Office 365 Account and click on Sign in.
Provide the PST file path by browsing in the machine and select the PST file folders. Click on Restore option.
Choose the items from the Select Category and check the Create Folder Hierarchy to maintain folder structure. Apply date filters to selected items and click on Start.
After the process of PST to Office 365 migration will be started and a message will be received after complete Restoration.
To verify the successful migration, login into your MS Office 365 Account