it's not really clear what the screenshots are showing - in the 1st picture it seems like you are able to define excludes ? where are you not able to define excludes ?
I am using Custom Cluster for Solaris which is not in the default list of Blade logic online mode (Solaris Catalog)
When i want to exclude any problematic patch and choose exclude functionality it does not work , but it works with the all other online mode catalog ( Like OS Arch.)
Looks like there is defect and can't exclude missing patch in case of Custom Cluster.. have opened ticket with BMC and they said they will provide a hotfix for this issue soon.