When using tab switcher from the app store add the widget to your dataview.
Make sure to set a class to the tab container (not on the individual tabs) and also set this class in the switcher widget.
Create a tabindex attribute(integer) in your entity and select this as the datasource.
The create a microflow that sets the tabindex attribute, for example with 2 tabs set the attribute as follows:
if $entity/tabindex = empty then 0 else if $entity/tabindex=0 then 1 else 0
Make sure to refresh the object in the change object activity and the tab will be changed. Tested in Mx 7.23.5
I did not get the microflow version to work, because when using this same method the widget will keep switching between tabs in a never ending loop.
But at least with the attribute option this can be used to switch tabs with a microflow button.