There NO ANY "unlock wallet" option on "setting"!
There NO ANY option "for staking only", not on "setting" not anywhere I can found!
I never set any locking on this wallet, there option "encrypt wallet" under "setting" but I never use it.
There not any Guide or instruction about HOW TO USE this wallet anywhere!

Just to let all know, because no guide or support, and Pkb traded only on one Russian exchange (Yobit) and bittrex, (both suck) I decided to dump all my pkb and go with more stable coins without all this headache.
Thanks for no help already dumped all.