Turning off Primary Contact Requirement?

Is there an option to turn off the requirement for a Primary Contact on a constituent table? I don't see an option when I am in the Primary Contact properties in Power Apps.

We are trying to clean up old/inactive constituents - many of which do not have a primary contact and are so old, we are not sure who it would be. Because we can't leave the primary contact blank, we are not able to deactivate these old accounts. 

You should be able to change it.  In Power Apps open the table called Constituents, then click on Forms, and then click on Account.

The form should open.  Click on Primary Contact and in the section to the far right click "Edit table column" where you can change the Required from Business Required to Business Recommended.

thank you - this was helpful! (I was missing the step to 'edit table column'.