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:
.single-forum .widget-area {
display: none;
}
.has-sidebar:not(.profile-sidebar,.group-sidebar,.llms-pointer,.activate) #primary, body.buddypress.has-sidebar:not(.profile-sidebar,.group-sidebar,.llms-pointer,.activate) #page #primary {
max-width: unset;
}
4. Save changes.
Screenshots
Without code
With code: