How to display the loading icon when executing a service in mashup

Dear Community,

Now I have a mashup with a grid inside. When I click on a row in the grid, a service will be triggered. After the service call is completed, a mashup will pop up to display some information. The problem now is that the service execution time is very long, which may take more than 1 minute. When I click on a row, the page needs to wait for more than 1 minute before the mashup pops up. In this more than a minute, the page does not respond, resulting in a bad experience. So I think when I click on a row in the grid, a loading icon can be displayed, but the loading icon cannoy placed on the grid, do you have any suggestions? Thank you

Best Regards,

Chason