Note: To check the access structure of an address, you need to first have your address added to the owner access list of the aforementioned address.
Step 1: Log in to the TRON block explorer — TRONSCAN.
Step 2: Open your account page, scroll down to the Multi-signature module.
Step 3: Click EDIT to the right of the control address.
Step 4: Enter the address you want to check, and then click SAVE.
Step 5: The access structure of the address will be displayed.