There is no special configuration needed for the BGP checks. Only install the actual mkp.
For further troubleshooting the following outputs are helpfull.
cmk --debug -vvII HOSTNAME (only if you get error messages here)
cmk --debug --checks cisco_bgp_peer -vv HOSTNAME (it is possible that you must do this command two times as some checks are using counters and then two intervals needed to calculate a value - don’t use the ‘-n’ option as this stores no counters)
With these output it is possible to give you some more tips.
The screenshots in your old topic are mixed from WATO and normal Multisite GUI and not so helpful for the troubleshooting.