New Resource added to Scheduler - Missing Knowledgebase id

Hello all,

I wondered whether anyone can help with this?

recently added a new resource to our CP and SCH solution; CP is fine, but for SCH everything works apart from when I look at calendars; I am unable to edit 'rules and groups' as it is greyed out - the error says ' The calendar has no knowledge base ID. Make sure a valid knowledge base is assigned to the calendar'.

I have checked all the settings i can see on the resources form and can see its missing but I just can't seem to solve this?

 

Any thoughts - we are still on SCH 5.6.2.3 core ( shortly updating )

thanks