If you are asking with desktop, you can use the built-in tor switch present in the wallet itself.
If you still can't figure it out, go to settings in desktop app and switch to tor network. This is the safest way to access your wallet without getting traced.
If you are asking with android, go to the Orbot app and tick the "Apps VPN mode" and tick the byteball app. So that when you open the app you will get connected to tor network automatically.
I didn't notice any Tor switches back then, maybe this was added recently?
I want to access with Tor using the desktop, I never use Android for anything crypto since it shouldn't be considered safe.
So I assume that if I enable the Tor switch I don't need to open a Tor Browser instance? because with Bitcoin Core I think you need to have opened a Tor Browser window for it to connect to the Tor network.
I also assume that when you enable the Tor switch in the Byteball wallet, you have to restart the wallet for it to connect to the Tor network.