TimeTable Visio supports import of XML files with the Microsoft Project schema. Conveniently, P6 exports to this format natively. This article will show you how.
With the selected project open in P6 click Go to File --> Export.
When prompted for the Format, choose Microsoft Project XML 2013 (any version works, but 2013 is most efficient).
Click Next. You'll then be prompted to pick a location and name for your export. Click on the ellipses next to the file and choose a location and name.
Click Next. If a Template isn't already created you can create a new one. There are no special requirements on top of what you'd have for preferences. Any Template works, although we recommend going through and making sure the settings make sense to you.
Click Finish. An xml should be placed in the location you chose.