Yes you can now In the Herelink settings app For Sbus channels.
All Pwm for Sbus will be configured in Herelink settings
Pwm Servo outputs can be configured in Solex TX, more too come one this for QGC in future.
Please take a look at this for Sbus programming. https://github.com/MadRC/cubepilot-docs/blob/master/herelink/Sbus_Buttons.md