How to get data from a GPS Data Logger into Lightroom 5.6

In Adobe's help file "lightroom_reference.pdf", in section 8 on the Map Module, there is the following:

"Click the GPS Tracklogs button and choose Load Tracklog to upload GPS data (a GPX file) from a third-party

device."

I can't see this button anywhere.

Where is it please?

(I am thinking of buying a GPS logger, but obviously need to find this button.)

Thanks.