how do I add the DNA data of my descends to their profile?

Question

How do I put my husband, child and grand daughter's DNA on their their file?

Answer 1

For privacy purposes you cannot add DNA information for any living person except yourself.  You can invite your husband (and your child/grandchild if they are adults) to join Wikitree by adding their email addresses to their profiles.  They can then add their DNA test information to their profiles and turn management back to you if they aren't interested in participating.

Wikitree doesn't store any actual DNA data, just what test or tests a person has taken.