I would suggest setting up a regular meeting with your primary supervisor at least. Face to face, at least once every two weeks. I don't have this, I simply knock on the door of my supervisor when I need help and hope he's in. He knocks on my door when he needs to tell me something. I sometimes don't see him for weeks, sometimes I see him every day for 2 weeks! This works for me but I would suggest it is highly unusual.
Most academics are very disorganised and/or very busy. This means they often resist regular meetings. If you can get them to have regular meetings with you from an early stage however, then you can hopefully defeat this. The most common complaint on here is that people cannot contact their supervisor. A regular meeting avoids this.
To sum up:
1- Try and get a regular meeting, I would suggest once every 2 weeks
2- If this can't be done then make sure you can knock on their door and/or pester them when you need them.