Importing data from different PolSAR missions - PolSARpro 6

Hi, I have installed PolSARpro v6 in Ubuntu 18.04. This may be a basic question, but I cannot find an user manual or tutorial: How do I import data from different missions (e.g. ALOS, RADARSAT-2, UAVSAR)? In previous versions of the software, there were small icons with the satellite or plane image. In this version, there is only an icon for Sentinel-1.

First you click on “Bio”, than “Enter”. This opens the traditional menu similar to the old versions.

From there you can proceed as explained here: Calibration in PolSARpro problem