To lock FAB for veFAB, navigate to the DAO and select the "Locker" button in the top menu.
The Locker tab.
Select the "Lock" button.
The Locker page - view your lockup and lockup tokens.
Enter the amount of FAB you wish to lock up and the duration you wish to lock up for.
The Lockup dialog.
You can lock up FAB between 3 days and 5 years.
The lockup dialog with the maximum lock period selected.
Once you have locked your FAB, you will have veFAB to vote with. The "Locker" page will show your lockup balance, time remaining before unlock, and the date of unlock.
The Lockup page displaying the current lockup balance.