Final answer:
When configuring a WLAN with an SSID of MyCompanyLAN, the first step is typically setting a unique profile name in the WLC GUI.
Step-by-step explanation:
When configuring a normal WLAN using the WLC GUI and setting up the SSID as MyCompanyLAN, the first action you are most likely to perform is assigning a profile name of up to 32 characters in the Profile Name field. This is because the profile name is a unique identifier used by the wireless controller to manage multiple WLANs. After creating a profile name, further configurations such as setting the SSID, selecting the WLAN type, and assigning a VLAN ID can be done accordingly.