How does RADIUS work?

Question

RADIUS

Hello.
I'm trying to set up a RADIUS server (DaloRadius) together with 3proxy.
In the proposed scheme of work, 3proxy receives from the Radius server during authorization, in addition to the login and password for the user, also the IP address of the proxy next in the chain, to which for each specific user you need to send his traffic.
It is necessary that the IP address of the proxy, which gives the Radius server, changes from time to time.
For example, I will change it using a script that changes the corresponding entry in the MySQL database.
Will this address be updated for the Radius client, which is 3proxy?
Is this possible when I change the address field in the MySQL database, and the Radius client receives the updated address within a short time via a Radius request? Or does this technology not work that way?