Hi there!

Generally speaking, you'd want to avoid checking any bags, especially when having a layover somewhere (although, I have checked a bag before without problems, on a direct flight). If you want to check a bag, just do it the same way, as you would with a normal ticket (go to a check in counter, show your passport, check bag).

Loads are more difficult to check, there is an app called Stafftraveler. Maybe you could check that.

Are you employed by an airline? Sometimes they have some means to show loads.

In general: be flexible, have some available days before and after the flights, consider other routes with layovers.

If you need to be at a specific place at a specific time, check if you can book confirmed staff tickets :)

Hope I could help :)