You can choose to get the vouchers in the November clubcard statement so they all come in at the same time just in time for Christmas.
So you add up all the money in the "pot" and it comes through in voucher form and drops in November depending on what you have saved Tesco add the bonus amount to it.
So there is from my own account
The clubcard vouchers saved I can access right now.
Clubcard points converting to vouchers will happen in November
The top up vouchers which is what you are talking about will be added then +
the bonus vouchers.