timing for new housing-aspects

1
What are the best aspects to have for meeting with a new housing manager/estate agent?

We have to schedule a meeting with the agent who will be handling our potential new home. They have 2 apartments to show us, well at least one, but we also need to meet approval with the Building's board prior to moving in.

So in an event chart for housing what aspects should we look for? I'd like to schedule a time with the best aspects we can get.