How can I connect a different Facebook account to a Shopify website?

[KellyB2022]

Hello Shopify Community, 

I have an Ad Account that is connected to a client's Business Manager, but I have been given full Admin access (however, I am not the owner). Every time I try to connect their Facebook account to the Shopify page from my computer, it only connects to my personal Facebook page. 

How can I connect a different person's Facebook account to a Shopify website so that I can access their Business Manager? 

Kelly 

[DogonCaddy]

@Shopify I would like to get some support on this as well. Can someone please assist. Pretty important ahead of the holidays. All guidance is outdated and irrelevant.