RE: Phone Call Closing Activity
Hi Hemanth,
Is that you want to change the ribbon button display Text? or Label on Popup window?
If it is for ribbon button "Close Phone Call" you need to do the following steps via Ribbon Workbench.
1. Add Phone Call Entity to Ribbon to a Solution.
2. Export the solution so that you can re-import if something goes wrong.
3. As shown below right click the Close {0} button and you see Customise Button(As this is OOB so you need to select to customise it), click that
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4. As shown below change Label property as what you want to see.
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5. Publish the changes
6. Open Phone Call activity and now you should be able to see the change.
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If you looking to change the Label on popup window, I would recommend to create a dialog and perform the operations you want but it is few clicks and no coding involved. But the form will not refresh when you run the dialog, you need to refresh manually to see the changes.
Best Regards,
Surender