To be able to quickly display what a MCRM user will see

Hello,

I want to set up security roles, customize fields that a user will be able to see or not and, the most important case, I am performing an historical data migration and would like to be able to quickly switch to an MCRM user to control what he can see, if her activities are correct, account and contacts assigned ok, and so on.

Any idea to quickly switch to a specific user MRCM front-end?

P:S:. in GM, I only add to select from a list the user I wanted to see data, so, I could auickly switch from one to another calendar user.

I know that it is not "secure & confidential" but would like to do it anyway to go faster while checking the integrity of migrated data.

Thanks!