How to distribute wifi in larger builings

How to configure multiple access points to enable roaming if one access point cant distribute wifi for the whole building. The building needs about two access points to offer wifi in all rooms. It's intended to use non-business access points.
1 answer

Use the same settings

To use roaming for a bunch of access points apply the following settings:

- connect all access points to a central switch
- use the same SSID (network name) for all access points
- use the same encryption key for alle access points
- use different channels (preferable 'automatic') for all access points

These settings enables a seamless handover for mobile clients within this building.