Hi @NishaB
2nd part yes , it can be done, you need to create button on portal and write code to link / redirect to other RP.
https://www.servicenow.com/community/now-platform-forum/how-to-add-button-in-service-portal/m-p/1118...
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Dr. Atul G. - Learn N Grow Together
ServiceNow Techno - Functional Trainer
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