I want to remove the default subject value "Call" from the 'log a call' page from activity history section on case page. Could it be possible? Thank you.
If you are using this functionaliy in classic, then you can create new List button by using url hack. We can set the subject to blank by using following steps - When click on log a call button -> url would be like below if I clicked from Contact record -
So Just create new button and set blank value to tsk5 attribute in url. Go to Buttons, Links, and Actions of Task - > New Button or Link - > Select List Button as radio type ->