Dual Class Kensai/mage

[tim eastham]

I've started as a Kensai and reached level 9.
How do I dual Class as into a mage? Human and Stats are 13-str 18-dex 18-con 18-int
18-wis 18-cha
When I look at the Info page to dual class my character the button to do so isn't highlighted? can anyone help please?

[Meerlight]

you don't have high enough strength to dual class to anything. You need at least 15 in strength.

[tim eastham]

Thanks!