Trajnet++ data conversion: from indoor tracking/badge coordinates to desired data representation

Hi, I am starting to explore Trajnet++ and it seems very promising. Thanks for hosting it. However, I am struggling with applying it to my indoor crowd trace <coordinate - x & y, id, timestamp> data (with fixed - 2 sec - and variable sampling as 2 different cases). In case of images, frames and fps etc. apply perfectly; however, how to approach handling native positional data? would very much appreciate any guidance around this. Thanks!