Enabling Fluid Engine with Circle Member

Hi, a Circle member that previously worked on my site, opted out of Fluid Engine in their Circle Labs panel. I haven't been able to get ahold of them to revert that change so is it possible to make another Circle member a contributor and opt-in from their Circle Labs panel? Also, will removing the previous Circle member as a contributor, opt back into Fluid Engine?

Thanks.

Settings > Squarespace Labs > Circle Labs > Uncheck Fluid Engine opt-out. 

Hi Jay,

As I mentioned, I am not a Circle member so I don't have that setting and the original Circle contributor, I can't get ahold of. I wanted to know if another Circle member can be added as a contributor and then they can opt-in to Fluid Engine?