attribute modifier vs/or xd6 rolls

[sekalo]

Originally Posted by hcobb

The reason being that everybody is expected to contribute something to combat while preserving RP space for specialists outside of combat to prevent min-max-monsters from dominating all situations for their bystanders.

I am still not getting or understanding and in no way trying to be difficult. What is a good judgement call at the table as to when to use '-x' on dice rolls or 4/DX.

As a standard practice - do I use '-x' during combat, but use something like '#/DX' with skills outside of combat?