​Hey there, i have a gallery of 3 columns per row and in each column is a bootstrap carousel. 

<div class="row">
​<div class"col-lg-6">...</div>
​<div class"col-lg-6">...</div> ​<div class"col-lg-6">...</div>
​</div>
​<div class="row">

​<div class"col-lg-6">...</div>
​<div class"col-lg-6">...</div>
<div class"col-lg-6">...</div>
​</div>

​

my question: how can I include the isotope filtering, which I switch with a dropdown-menue,  what i need to include ? and where ? In general what i need to do, that the filtering is working ? 

thanks !