Hi,
The situation is a couple in their 90s. One is highly unlikely to live another 5 years. The other should - but that depends on how they cope with the loss of the other.
They have 5 grand children - all of whom they want to get equal shares of their assets when they both die.
What they want to do is put money aside for their future great grand children, none yet conceived.. - even though they may not be alive when they are born.
So they want to put 5000GBP a year into a "set aside" fund. The great grandchildren (or their parents on their behalf) get 500GBP on birth from the fund (or the remaining balance, if