I started the last version of Ekos/INDI from 6/04 (means 2.01).
When I look the define profile pad. The entry to choose or define main and guide optics disappeared. Where did they have gone ?
Thanks

It was transformed to optical train settings. So now you specify which optical train should be used for capture and which one for guiding.

Nice but where do we define that train settings ? Didn't see anything in Ekos.

On capture or guiding tab on top there is Train: selection and next to it button to edit trains.

Thanks, found it in tools->devices->... .
Looks weird to separate this feature from Ekos as this is a main part of profile definition out of any device connection.
Also because you don't change the optical train at each session.
I have not all elements that justify this choice, but to my opinion it makes Ekos more fragmented and then more uneasy to use and less understandable for newcomers to Ekos/INDI.

It is step towards multi camera capture capability.