Manually applying sell trade to specific shares in holding

Why is this feature not active yet?

I have a different situation to some of the above and the ability to select a different share allocation method for a particular parcel or manually select which parcel to sell.

I have some losses that are discounting my long term capital gains that I would rather apply to short term gains,

However I have to select either lifo or minimise cgt for all transactions relating to particular company.
Neither of these are appropriate to ensure my losses only apply to short term gains.
Selecting individual sell(s) to apply lifo with min cgt for the rest would be extremely useful.