Alright, first things first. You need a table to keep track of your inventory. You can either create a new one or use an existing table. Make sure it has columns like 'Item Name', 'Stock Quantity', 'Reorder Level', and 'Supplier Information'.

Now, let's make sure each inventory item has its own row. The fields you need are:

• 'Item Name': Just a simple text field.
• 'Current Stock': This should be a number field.
• 'Reorder Level': Another number field. This is the point where you need to order more stock.
• 'Supplier': This can be a text field or a link to another table with supplier details.

Next, we need a formula field to check if the stock is running low:

• Call this field 'Reorder Needed'.
• Use this formula: IF({Current Stock} <= {Reorder Level}, "Yes", "No").

Let's set up a view to see which items need reordering:

• Create a grid view and name it 'Reorder Alerts'.
• Apply a filter where 'Reorder Needed' is 'Yes'.

Time to automate notifications for when stock is low:

• Head over to the 'Automations' tab.
• Create a new automation with 'When a record matches conditions'.
• Set the condition: 'Current Stock' is less than or equal to 'Reorder Level'.
• Add an action: 'Send an email' or 'Send a Slack message'.
• Customize the message to include the item's details and reorder information.

Let's make sure everything works:

• Manually lower the 'Current Stock' of an item below its 'Reorder Level'.
• Check if the automation sends the notification as you set it up.

Keep an eye on the 'Reorder Alerts' view and the automation log regularly. Make adjustments as needed for new items or changes in reorder levels.