Hi. My name is***** you for your question and the opportunity to assist.
If you're switching from WEP to WPA or WPA2 you create the pre-shared key.
It must be at least 8 characters and it's a best practice to use only numbers and letters. (no special characters)
After creating the pre-shared key make sure to Save the change.
You'll need to reconnect your wireless devices using the new psk. You won't
need to change the name of your wireless network (SSID)