Dear SDZN,
Thanks for writing back and updating us. We are sorry if our above reply confused because we always try our best to help or resolve the user concerns in this community.
As per the further updates, I would like to be clearer about your concern i.e., the feature you are looking in the Table Layout is not available in the Word Online and it’s caused due to the feature limitation of the Word Online.
Word Online, please check the picture 1 below:
Word application, please check the picture 2 below:
I agree with you having the ability to have the same feature of Word application in the Word Online will benefit the users and I suggest you to add your valuable idea as a feedback in the Word · Community (microsoft.com) which is the best place to share our ideas and improve the Microsoft products.
As a workaround, open the same Word document in the Word application for using the features that are not present in the Word for the web.
Thanks for understanding and if you feel my reply helped to explain your situation, please click on the helpful button (Yes or No) in the reply. Please check the picture 3 below:
In the future, if you have any further concerns related to Office 365, please feel free to post a new thread in this community and we will try our best to assist you.
Have a good day!!
Best Regards,
Sophia