To bulk update the opportunities below are the steps to follow:

i.  Switch over from the Kanban view to the List View. 

ii. Select the Opportunities or use the filter option to search for a specific set of Opportunities to be updated. 

iii. Tick the check-box next to each of the opportunity or bulk select them using the check-box next to the ‘Opportunity Title’. 

iv. Click on ‘Bulk Update’. From the pop-up screen on the right, select the field to be updated and enter the value.

v. Hit Save, once done.