I want to setup my Apple Watch Series 6 cellular connection. My phone plan is associated with my employer and I cannot add my watch. I have added my watch to my spouses Verizon contract. I cannot seem to connect my watch to what I have setup with my spouses plan.
You can use Family Setup
https://support.apple.com/en-us/HT211768
However, this is less capable then having your own iPhone and paired Apple Watch.
Family Setup is intended for kids and elderly.
That is correct. You can only activate cellular for the Watch if it is paired to your phone. You cannot add it through your wife's phone, or you would have to pair it with her phone, and it would be a duplicate of her number. You cannot activate except for the carrier of your phone, and as you have found, you cannot do that with a business account.
Setting up cellular on watch with alternate cellular plan not connected to my phone
