If an
investment is non-unitised then in the “Investment” drop-down field (at the
bottom left of the “Policy” screen, as shown below) you should select “Non
Unitised”…

Then after you
have moved onto the “Transactions” screen by clicking the black “Curve Right
Arrow” button you should just enter values in the summary fields at the bottom,
as illustrated below…

Optionally
you can choose to add non-unitised fund details (by clicking the “Add” button),
though for obvious reasons you won’t be able to enter the number of units, as
shown below...

…though you
do end up with a list of the funds, as shown below.
