The easiest way may be in tribaldex. Go to your wallet (https://tribaldex.com/wallet/ — you will have to login) and you will see a list of all tokens you hold. Scroll down to the one you want (or use the search box). Make sure you have it staked (use the lock icon to stake it), then you can push the icon with the arrow point to the upper-right. A "delegate" box should popup. in the "to" field put who you want to delegate to (for example, if you are delegation your pob, write "pob-curator" in that box) and how much you want to delegate, then hit the delegate button. That's it!
!PIZZA