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Action Button is Open Activities section
How can I create an additional button (additional to the "New Task" and "New Event) in the Open Activities section of an Account Page?
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Hope this works for you. Let me know if you have any questions. Thanks.
I have tried that but I get the following error message - asking for a value (but not allowing any value to be entered)
As the content source is visualforce page, you need to first create a visualforce page with standard controller as "task" or "event" in order to define a custom button on it.
Sample visualforce page code:
<apex:page standardController="Task">
<!-- Begin Default Content REMOVE THIS -->
<h1>Congratulations</h1>
This is your new Page
<!-- End Default Content REMOVE THIS -->
</apex:page>
After you create this page, try creating a custom button and you can see the value.
Please let me know if you have any more queries.
Regards
Sampath Kumar Goud
Sampath is right that if your Content Source is Visualforce Page, you will have to create a Visualforce Page with Standard Controller as Task. In fact, if your logic can be completed in JavaScript, then you do not need Visualforce Page at all. You can select "OnClick JavaScript" as the Content Source, then define some custom Javascript logic in it. For example, you can do some query, update field, do page redirection, call external class from the JavaScript.