When the first little sprouts appear, they’ll look like green hairs trying to escape from prison. Do not touch them. Their stems are as fragile as a hipster’s ego. Wait until they have two true leaves (not the little cotyledon hats) before you even think about moving them.
If you planted five seeds in one pot, you’ll need to thin them out. This means pulling out the weakest seedlings so the strong ones can thrive. It’s brutal, but it’s nature’s version of a corporate layoff. Be ruthless. Or just transplant them to another pot and call it a "relocation" for mental health.