Thanks Dawn!
Installing the hives in my backyard went well, and the bees are quite busy 
…and I already have a question. One of the hives is a long hive with two 10-frame compartments (see this post for Romanian hive and frame types) and one of the colonies is quite crowded, I saw queen cells being started. So they’re most likely preparing to swarm, and I can’t give them more space in this hive. I took one brood frame and put it in another hive with a weaker colony, replacing it with an empty frame. On hindsight, I probably should have replaced the brood frame with a built-out frame, so the queen has space where to lay, but I’m not sure what’s best.
Any suggestions on preventing swarming in this case? I would hate to see this colony weakened, and I’m unlikely to see and catch the swarm if it leaves. I thought inspecting every two days and removing any queen cells (I haven’t removed any so far), but I’ve been told that’s just delaying the inevitable?
I’ll post some photos of the hives in a bit.
[BTW, should I have started a new topic for this question?]