Hi Kalliope.
To use the Lots to their full potential you need the Traditional Version (though you can easily install both versions as I have done). Actually both Morinus' versions allow you to use the same formulae for the Lot of Fortune.... they simply go about it in different ways.
The rest of this answer relates to the Traditional Version.
From the Options Menu
Select Lots, which will take you to the Lots editor, (which is shown in your screen shot). The Lot of Fortune is pre-entered, as you point out. The default is to have the 'Diurnal' box ticked, as shown in your screen shot.
This actually means that the formula shown is reversed automatically for Nocturnal charts, i'e' it results in the night formula being reversed to AC+SU-MO, you do not have to enter the night formula as a separate entry (as you do in Solar Fire).
Unchecking the 'Diurnal' box means you get the same formula all the time, irrespective of the time of day the chart is cast. This is the default for the Regular Version and follows Ptolemy (who did not follow the practice of his day and was trying to 'streamline' Astrology). This gives you the freedom to use whichever approach you like, and indeed switch between them by simply checking or unchecking the Diurnal box. I would suggest you leave it checked. And if you use the Regular Version as well you check the bottom radar button to get the same effect (the middle radar button actually gives you the Lot of Spirit).
Yes you do need to type the individual formula in but in the thread I've only used 18 Lots and most lists will give you about 93. Dave also supplied some formulas which he thought were useful.
Once you have entered the formulas for the first time that should be it, because Rob assures me that the file can be transferred to any future version and I've successfully transferred the file between Traditional Versions on three computers, so I know it works.
I might be able to attach the file to a post here, so I'll have a check and see if I can do that.
Some of the Lots in the thread apply to both diurnal and nocturnal charts, so the Diurnal box is left unchecked.
You will also notice the check box to the left of Lot of Fortune in the main list screen (to the right of the editor entry screen) checking this ensures that the Lot shows up in the tables list of Lots for any particular chart and checking Lots in the Options Appearance I, dialog box (bottom left) will show the lots on your chart (those that you have ticked in the Lots editor).
That might sound a bit of a bind but it means that you only get the Lots for a chart that you really want, not the entire list which you have to trawl through. And none of the other software programs are capable of putting the Lots on a specific chart (apart from Fortune), so you get to see at a glance where the Lots you are interested in, lie on the chart.
I've used that feature in a number of horary readings in Round 7, so if you want to see what it looks like, go to my last reading in the Answers thread.
Edited to add
I've checked Rob's email and I've uploaded the relevant file. BUT
Before you can use it you must change the extension from .txt to .opt
Do not change the name in any other way
Then copy this file into the Opts directory of Traditional Morinus - you might well be prompted that the file already exists and do you want to replace it. I'd copy the existing file just in case this doesn't work and put it somewhere safe. Then replace it with the new version.
When you know open the Lots editor you should find 19 Lots, with 1, 2, 4 and 19 checked - those were the ones I used and displayed last. Ticking the others will make them show up in the Tables, Lots list and setting the radar button for Lots in Appearance I will make them show up in a chart.
Let me know if it works - which will mean that others can also use the same file, providing they follow the same instructions.