Hello,
The AP541 is just an access point, and does not function as a DHCP server. You may be able to setup a second VLAN if your router supports it and then create a second DHCP pool for it, giving you more addresses. You can also look into expanding your DHCP scope to something larger so there are more addresses available.
Hope that helps,
Christopher Ebert - Advanced Network Support Engineer
Cisco Small Business Support Center
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