Dr. Darden,
When you train someone or yourself for that matter and you want to incorporate other activities such as biking, swimming, rowing or jogging
Do you advise performing those activities on the same days as weight training or on the non weight training days
tia
I recommend doing your other activities on non-training days.
Prioritise. If you are doing 2 sessions in a day do the most important one first. Alternatively if one has a skill component do that first.
If training on seperate days do the priority session after the rest day.
The above means you do the priority session when freshest.
Doubling up depends on what the sports are. Suggest you review the so called interference effect.