If you are likely to want to individually gain virtual badges then you’ll need to log on separately. If, like me, you want to ride x kms at y Watts and enjoy the scenery ( which is what I do) then just keep riding under the same log in. Rouvy won’t know who’s on the bike!
That is one solution. Do I have to change the gender / weight settings as well given that they are quite different? How does the trainer deal with resistance on "hills" with respect to rider weight for instance?
Ah, so you’re on a fully smart trainer. I don’t think that gender is an issue, but is there a big difference in weight? ( the Rouvy community will lynch me for these suggestions).
If you are training seriously, using ftp and ftp zones then you’ll be better off separating. I’d try just a hard re-start to the computer. I have to admit to not taking too much notice of this stuff, using my Wattbikes workout ideas on power instead. That is, as I say, heresy to the Rouvy badge collectors, who constantly argue about weight doping and cheating, forgetting that not everyone uses a fully smart trainer.
What are your objectives for using the trainer?