Arduino Portenta GSM & GPS at same time

Hi!

I am using the Arduino Portenta H7 and I am using the CatM1 (Thales) shield to do some GSM and GPS stuff.

I can do GSM (http) requests and I also can do GPS requests as long as I comment one part of the code to let only one (GSM or GPS).

I saw many things on internet saying I should use Serial1 or a SoftwareSerial but there are no examples...

I am using the official libraries GSM and GPS...

Can anyone guide me through these?...