Select application form and create application.
Receive approval request from Teams and email and you can open application and approve.
You can use from smart phone and tablets.
You can create application form using Form Layout Builder.
You can create complicated approval process using Application Route Builder.
Support auto-sync function with G Suite user database. You can import user information using CSV file.
All important actions relating to workflow are logged in the operation log so you can search what user did.
What is the best solution for your problem?
Please consult a KDDI consultant.