By default, the platform does not have this option. You can use the following CSS code to hide/disable the Last Activity time.
Please follow the steps below:
1. Go to BuddyBoss > Theme Options
2. Under Custom Codes, enable CSS
3. Append the following:
p.item-meta.last-activity { display: none; }
p.item-meta.last-activity { display: none; }
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/
Screenshots:
Without code:
With code: