1. the placeholder text gives an example. the common practice is to separate with a colon `:`. so if your ip is `5.5.5.5` and your port is `5000`, you'd write it as `5.5.5.5:5000`
2. cln uses "runes" which differ from lnd's "macaroons" but they both do the same thing: grant permissions to the bearer (in this case, SN). The certificate is for encrypting communication with anything that talks to your node (in this case, SN). It's like the `s` in `https`.

k00b

Perhaps I'll inspire you. There are two pretty good ones that you linked to. 

supratic

. I'm trying to set up  a cln wallet attachment.

Stacker Saloon

saloon

Two quick questions for @ek and @k00b. I'm trying to set up  a cln wallet attachment. 
1. How do I specifically separate the rest host and port when entering it?
2. Is there a difference between a certificate and macaroon for purposes of this connection? 