diff --git a/documents/Development Guide.md b/documents/Development Guide.md
index 7f53297..3056239 100644
--- a/documents/Development Guide.md	
+++ b/documents/Development Guide.md	
@@ -105,21 +105,31 @@ defs = Definitions(
 ```
 
 ### 2.3.2 Workflow deletion
-Here is a practical example of how to delete a workflow.
+Before deleting an existing workflow, first check its status (if is needed or referenced) in the **Dagster UI**:
+- Navigate to the "Runs". Identify a given worklog using the "Filter" button or navigation "Newer", "Older" buttons.
+- Check details and status: open workflow details by clicking on the target, or just check the status value.
+- Check logs: open workflow logs by clicking on the uuid.  
 
-**1. Pre-delete check**  
-Before deleting an existing workflow, first check its status (if is needed or referenced):
-- **Dagster UI**: Navigate to the "Runs". Identify a given worklog using the "Filter" button or navigation "Newer", "Older" buttons.
-- **Details, logs check:** Check workflow status, open it by clicking on it's target or open logs by clicking on it's uuid.
+Here are two practical examples how to delete a workflow:
 
-**2. Delete Ops (`ops/ops.py`)**  
-If the workflow is defined as an op, delete it's corresponding method from the `ops.py` file.
+**Temporary delete workflow**  
 
-**3. Delete Jobs (`jobs/jobs.py`)**  
-If the workflow is defined as a job, delete it's corresponding method from the `jobs.py` file.
+**1. Clean Registering Definitions (`repository.py`)**  
+Comment or delete workflow definition from the `repository.py`.   
 
-**4. Delete Registering Definitions (`repository.py`)**
-Delete workflow import, and it's definition from the `repository.py`  
+**Permanently delete workflow**  
+
+**1. Clean Jobs (`jobs/jobs.py`)**  
+Delete workflow definition from the `jobs.py` file.
+
+**2. Clean Ops (`ops/ops.py`)**  
+If workflow links also ops, delete their definition from the `ops.py` file.
+
+**3. Clean Tests (`tests/`)**
+If jobs or obs have dedicated unittest, check out the `tests/` folder and delete them. 
+
+**3. Clean Scheduler **
+If there is any scheduler for this workflow check and adjust it accordingly.
 
 ### 2.4 Best Practices & Constraints