In the new Layout Designer have a way to set the focus to a particular tab. 

In my case I have a form with multiple tabs. However only two tabs matter in this case. I will call the tabs "A" and "B" to keep it simple 

Tab "B" starts off hidden.

There is a custom button on tab "A". This custom button kicks of JavaScript that runs 'compilated' calculations the values for fields in tab "B" based on values that were set on tab "A". After the code is ran tab "B" is unhidden. However it currently leaves the user on tab "A", I would like it to instead be focused tab "B" so that the user can continue on and fill out the rest of tab "B" before submitting the form. 

link to post I asked about this first: https://answers.laserfiche.com/questions/237115/Set-current-tab#237145