Where do the external effects appear?

I’ve created an external effect. I’ve connected it to my interface in and out. I’ve calculated its latency. But when I want to use it, it doesn’t appear anywhere!
In the inserts, I don’t have any external effect, nor the name I gave it (SSL).
I’ve been looking for two hours. There’s something I don’t understand, but what?
I tried mono effect, stereo effect, different I/O

I’m using cubase 14.

You’ve got to go in to the plugin manager and add it to your plugins list like you would a vst.

Thank you. I find it in the plugin manager. (?). I 've drop it in the plugin list on the right and now I have a plugin called “external effet”. It has the right delay compensation. But… I created 3 differents external effect, with different name (because I intent to use 3 different hardwares on different I/O). How can I know what is the external effect selected? And How can I select one or the other one?

OK, I found it. It didn’t appear the first time. But now I have SSL2, SSL2 and SSL3!