It is possible to link directly to tabs on a form. There are two methods for doing this:
Query String Parameter
By adding a query string parameter to your URL to you can link directly to a tab on your form.
The format of the query string is as follows:
wsf_tab_index_<form_id>=<tab_index>
Where:
form_id
is the ID the form containing the tab.tab_index
is the index of the tab you want to open by default. 0 = The first tab, 1 is the second tab and so on.
For example, if your form ID is 123 and you want to open the 2nd tab (this would be index: 1), your URL might look like:
https://mysite.com/my-form-page/?wsf_tab_index_123=1
Conditional Logic
Conditional logic can also be used to open any tab of your form. This is done by clicking the tab.
An example of opening the 2nd tab on a form when form loads is shown below:
This same methodology can be use with any other IF condition (e.g. if a custom button is clicked).