Sorry, i don't know of any ways to do this. Why not just trust the SRS algorithm? Review all of your new cards. And, if you can remember and draw the characters correctly, you should just pass them; even if you had recently seen/added/studied them. If they don't stick tomorrow, fail them. Let the system take care of them for you. Just my 2 cents.

I have finished "RTK lite" some time ago and keep adding new kanji (from RTK1 or RTK3) as I encounter them in my Japanese course. To do this, I go to the Study page, search for the kanji, click on the "Edit flashcard" icon and select "Add flashcard". Now the card appears in the "New cards" stack. Most of the time, I leave it there until the stack contains, say, 20 cards. Then I decide it is time to learn some of those new cards. This means starting to review them, most likely failing them because they have not yet been studied.

At this point, I would not like to review all 20 cards at a time, but perhaps select 5 of them which are related to one another, for instance because they have the same key, or because some make use of others as components. But it seems that I have no command on which cards the program is going to present. This was the reason for my question.

Admittedly, this is not a crucial point. I can cope with new cards being presented randomly. Just asking in case I missed something…

Thanks for your suggestion. What I am probably doing wrong is directly using RevTK to keep track of the new characters I want to study later because I have found them in words I am learning. I should keep a list somewhere else and only introduce them in RevTK at the time I decide to study them. Moving them around within RevTK is not what the site is intended for…