Integrate your favorite online applications into Zoho Business with the Add Apps feature!
Alternatively, click on the Add Apps link on the left navigation panel and provide the URL to have your application displayed. You can delete any application that you feel is not required or alternatively access Zoho Business Settings to disable the app.

To change the order of the applications access Zoho Business Settings->Applications->Drag and Drop to the required order.
To rename the app: Settings->Applications->re (rename)
Organization Apps
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Click on Organization Apps to add your required application, which will then be added to all the users in your organization. Click on Add Apps->Enter the URL-> Click OK
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You can also delete an app and the change is reflected throughout your organization.