having trouble spotting biconditionals on Grouping games and in out games.

reyesusmc78-1

I know how to translate rules when there is an indicators present but I am having trouble when there isn't an indicator. I confuse not both with always apart sometimes and it effects my timing.
for example on In/out problem set 2:
fenugreek is not included in the same recipe as nutmeg F<->/N
Saffron is not included in the same recipe as Turmeric S <->/T

initially translated these as not both. is it because its an in/out game that they are forever apart

on In/out with sub categories problem set 1 game 1
Gibson and Vega do not serve on the panel in the same year as each other
Hsu and young do not serve on the panel in the same year as each other

both are translated as not both rules according to lesson

help please