>>536338934
Modules are different. You need to clear the two missions to be able to unlock it, but after unlocking it and be able to get lv1, but the only requirement for lv2 and lv3 is 50% and 100% trust on the operator. There's no time needed on them like skill mastery, but the real blockade with them is the material and module block (the one you have 18 of) cost. Module blocks are extremely valuable, and 6* operators for example eat up 12 per module level 3, since each 6* module level costs 4* module blocks.