How to update a hole table?

Hello,

I have a hole table. I have added holes to the model. Now, how do I add these new holes to the table? I don't see an area to reselect holes?

Bonus question: The table currently says A, C, D, and E. How how do I reletter these to include B?

Thank you!

Brent

SolidworksDrawings And Detailing