By default, the platform does not have this option. You can use the following CSS code.

Please follow the steps below:

1. Go to BuddyBoss > Theme Options

2. Under Custom Codes, enable CSS

3. Append the following:

@media only screen and (max-width:767px){

    body.activity #primary{

        order:2;

    }

    body.activity #secondary{

        order:1;

    }

}

/* BuddyBoss: End of code */

4. Save changes.

Note: Any modifications are considered as custom work already. Know more about our Support policy here: https://www.buddyboss.com/support-policy/