Thanks @romanmg . I tried it in an interface where I load all skills of the person with the chosen skills to be pre selected. Unfortunately, I am unable to pre-check the checkboxes which are pre selected in the DB. All of them are coming as unchecked.
I basically have a repeating group with each cell being one checkbox corresponding to each skill. For every cell I have put the condition that if its display matches the list of “selected skills” (maintained in custom state of repeating group), then check it, otherwise uncheck it.
Here’s how I have put the conditions, and here’s how it shows up. Do note the text in the end where I display the list of selected skills in a text.
This is how it shows up in the output: