More convenient PR checklist

.github/PULL_REQUEST_TEMPLATE.md

@@ -8,16 +8,20 @@ _Short description of the approach_
 (Screenshot of new behavior in GUI if applicable)
 
 
-## Pre review checklist
+## Pre review
 
 - [ ] Read through the code changes carefully after finishing work
 - [ ] Make sure tests pass locally (after every commit!)
-- [ ] Prepare changes in small commits for more convenient review (optional)
 - [ ] PR title captures the intent of the changes, and is fitting for release notes.
-- [ ] Updated documentation
-- [ ] Ensured that unit tests are added for all new behavior (See [Ground Rules](https://github.com/equinor/ert/blob/main/CONTRIBUTING.md#ground-rules)), and changes to existing code have good test coverage.
 
-## Pre merge checklist
+## If applicable
+- [ ] **When there are user facing changes**: Updated documentation
+- [ ] **New behavior or changes to existing untested code**: Ensured that unit tests are added (See [Ground Rules](https://github.com/equinor/ert/blob/main/CONTRIBUTING.md#ground-rules)).
+- [ ] **Large PR**: Prepare changes in small commits for more convenient review
+- [ ] **Bug fix**: Add regression test for the bug
+- [ ] **Bug fix**: Create Backport PR to latest release
+
+## Pre merge
 - [ ] Added appropriate release note label
 - [ ] Commit history is consistent and clean, in line with the [contribution guidelines](https://github.com/equinor/ert/blob/main/CONTRIBUTING.md).