If for an existing well, would do an intervention in the future, will this be added in the production profile section, or should this be set up using a facility constraint?

No, it will not be added to either of the above but set up as an additional production potential under the intervention section. It will be specified on the “Intervention Jobs” tab for a specific job which is related to the same well. And in this, the intervention production potential will be added on top of the regular production potential described for the well on the “Production Profiles” tab.