Thanks for the fast replies on this topic!
Setup:
xls with Registration for swimming championchips
xls contains a row per stroke (for example row1 "athleteid" "distance & stroke" "entry time")
so multiple rows for 1 athleteid or possible...
I solved this by merging rows, afterwards it was easy to merge the labels

1) installed extra ribbon ablebits data -> combine rows & delete doubles
2) max subscriptions for each athlete is 8, so in my label layout I entered a table with 8 rows... so rows not needed will not be shown

setup was to create a badge for each athlete with his name, id and all the strokes she or he has to do (with the necessary info available like heat/lane/...)

If somebody needs further explanation, shoot!