Merger

Sure. Post links to the duplicates you see or tag them

https://help.geni.com/hc/en-us/articles/229706447-How-do-I-tag-a-pr...

How do I tag a profile to a discussion?

Geni Support Team October 14, 2016 15:58
You may tag a profile by using the @ symbol and start typing the name of a profile on Geni to tag it to your post. A list of auto-suggested names will appear enabling you to select them. This will insert their profile ID within double square brackets into the text.

If you do not see the person you are trying to tag in the list, you can manually insert their profile ID within those brackets.

Example: To tag George Washington to a discussion, insert his profile ID into double brackets George Washington, 1st President of the United States

Additionally you can tag a person by starting the discussion from that person's profile, under the Discussions tab.

this is the best place to post requests for help with merges: https://www.geni.com/discussions/192543

If what you mean is you need help learning how to do merges you should/may be able to do on your own, see: https://help.geni.com/hc/en-us/articles/229705547-How-do-I-merge-du...
If you are using the HTML Tree, rather than Flash, then you may need some of the info here, as well: https://www.geni.com/blog/html-tree-move-this-person-and-resolve-du...