Hi Paulo,
I wonder if you may want to look for a macro that would add an SLA based on the atomic condition that you want to set it to i.e.
1. Create a Macro
2. Select the macro type as 'Site-defined Condition'
3. Add a new condition
4. Provide the required values i.e. Sequence, Select an Attribute, choose operator, Select Data Value, Data Value as per your selection
Select an Attribute : 'Service Type'
Choose Operator: Equals (from drop down menu)
Select Attribute or Data Value: Data Value
Data Value: select a service Type from the lookup list. EG: 'Priority 1 Resolution'
Please mark as correct if this helps your query.