Hi Silvia,
Hope this is what you were looking for;
You can configure up to 16 SSIDs on your 1100 series access point and assign different configuration settings to each SSID. All the SSIDs are active at the same time; that is, client devices can associate to the access point using any of the SSIDs. These are the settings you can assign to each SSID:
VLAN
Client authentication method
From this doc;
http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_installation_and_configuration_guide_chapter09186a0080101c3b.html
Hope this helps!
Rob
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