Converting an OLM (Outlook for Mac) file to a PST (Microsoft Outlook for Windows) file manually can be done with the following steps:
Export the OLM file from Outlook for Mac by selecting "File" > "Export".
Choose "Outlook for Mac Data File (.olm)" as the file type and select the items you want to export, such as email messages, contacts, and calendar entries.
Save the OLM file to a location on your computer.
Download and install the OLM to PST Converter tool on your Windows computer.
Open the OLM to PST Converter tool and click on the "Add OLM File" button to select the OLM file you exported from Outlook for Mac.
Choose the "PST" format as the output format, and select the destination folder where you want to save the converted PST file.
Click on the "Convert" button to start the conversion process.
Once the conversion is complete, you can open the PST file in Microsoft Outlook.
Greetings,
Peter