Can I allocate when I’ve already tagged, or do I have to untag each item to do this?
It depends on how the transaction has been tagged. If it’s been tagged to, for example, credit on a client or suppliers account, then you don’t need to untag it and can use it through the “Log Payment” option on invoices.
If you’ve tagged everything to a temporary nominal choice using the “something else not on the list” option, you may need to untag and retag it.
If you could give us a bit more information, we can certainly try and point you in the right direction