Did you read the installation guide at all? It’s not simple plug and play plugin and requires some developmental knowledge. (Such as use of inspect element to obtain the div id of a metabox)
For the DIV ID, if you simply want to sort your ACF metaboxes, find the post id of your ACF field, then use it as follows “acf_<postid>”, so for example you might write acf_9, if your using the ACF metabox that is post number 9.
In future versions, I’ll probably add a selection box so you can just easily select the ACF field you want to tab but for now, you’ll have to do it the manual way, it supports ALL types of metaboxes, not only ACF.