How do I share relationships with other persons having the same interest in a tree
AlbertSabo2, Thank you for coming to Community to ask your question about relationship viewing. You will find the answer by going to the Help Center (click on the '?' at the top of most FamilySearch pages). Type in 'Relationship viewing' in the search bar, and click on the article entitled, "Relationship Viewing: How do I turn on or off....."
It can also be found at this address: https://www.familysearch.org/help/helpcenter/article/how-do-i-turn-on-or-off-the-option-to-view-my-relationship-to-other-users
Hope this answers your question. Best to you on your family history journey!
As the Help Center article explains, the relationship viewing feature on Family Tree is all-or-nothing.
If you want to share only with other contributors you choose to engage with, you can give them the Family Tree person ID of one of your relevant ancestors who is deceased. The other contributors then can view their relationship to that person, which approximates their relationship to you.
About the relationship sharing, both people who share an ancestor, must have the Relationship Viewing box checked in their Setting, under Permissions, for it to work. You may want to message another user, and ask them if they are interested. Use the article link below:
Hope this helps.
Also, Relationship Viewing is universal and not just for a particular PID