Best Practice for building a data migration with non-TEE partner

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My recruiting team uses a non-partner for a fitness assessment and would like to be able to create a process mimicing background or job board request.  They want to be in a candidate's profile and click a button to order this assessment.  The data transfer piece isn't a concern.  What recommendations does everyone have for creating this action?  I'm picturing clicking some sort of action button but am not that confident I know how to build one.  Any suggestions/best practices would be welcome!  Thank you!!